diff --git a/plinth/locale/bg/LC_MESSAGES/django.po b/plinth/locale/bg/LC_MESSAGES/django.po
index d6a9d972f..8fbd58e0d 100644
--- a/plinth/locale/bg/LC_MESSAGES/django.po
+++ b/plinth/locale/bg/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-06-24 19:48-0400\n"
+"POT-Creation-Date: 2019-07-08 17:31-0400\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: Automatically generated\n"
 "Language-Team: none\n"
@@ -116,127 +116,153 @@ msgid ""
 "network."
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:38 plinth/modules/backups/views.py:50
+#: plinth/modules/backups/__init__.py:41 plinth/modules/backups/views.py:54
 msgid "Backups"
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:41
+#: plinth/modules/backups/__init__.py:44
 msgid "Backups allows creating and managing backup archives."
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:49
+#: plinth/modules/backups/__init__.py:52
 #, python-brace-format
 msgid "{box_name} storage"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:38
+#: plinth/modules/backups/forms.py:47
 #, python-brace-format
 msgid "{app} (No data to backup)"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Included apps"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Apps to include in the backup"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:72
+#: plinth/modules/backups/forms.py:83
 msgid "Select the apps you want to restore"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:85
+#: plinth/modules/backups/forms.py:96
 msgid "Upload File"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:88
+#: plinth/modules/backups/forms.py:98
 msgid "Backup files have to be in .tar.gz format"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:89
+#: plinth/modules/backups/forms.py:99
 msgid "Select the backup file you want to upload"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:94
+#: plinth/modules/backups/forms.py:105
+msgid "Repository path format incorrect."
+msgstr ""
+
+#: plinth/modules/backups/forms.py:112
+#, python-brace-format
+msgid "Invalid username: {username}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:122
+#, python-brace-format
+msgid "Invalid hostname: {hostname}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:126
+#, python-brace-format
+msgid "Invalid directory path: {dir_path}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:132
 msgid "SSH Repository Path"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:95
+#: plinth/modules/backups/forms.py:133
 msgid ""
 "Path of a new or existing repository. Example: <i>user@host:~/path/to/repo/</"
 "i>"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:98
+#: plinth/modules/backups/forms.py:137
 msgid "SSH server password"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:99
+#: plinth/modules/backups/forms.py:138
 msgid ""
 "Password of the SSH Server.<br />SSH key-based authentication is not yet "
 "possible."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:104
+#: plinth/modules/backups/forms.py:142
 msgid "Encryption"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:106
+#: plinth/modules/backups/forms.py:143
 msgid ""
 "\"Key in Repository\" means that a password-protected key is stored with the "
 "backup."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:111 plinth/modules/networks/forms.py:304
+#: plinth/modules/backups/forms.py:147 plinth/modules/networks/forms.py:304
 msgid "Passphrase"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:112
+#: plinth/modules/backups/forms.py:148
 msgid "Passphrase; Only needed when using encryption."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:117
+#: plinth/modules/backups/forms.py:151
 msgid "Confirm Passphrase"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:118
+#: plinth/modules/backups/forms.py:151
 msgid "Repeat the passphrase."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:139
+#: plinth/modules/backups/forms.py:162
 msgid "The entered encryption passphrases do not match"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:151
-#, python-format
-msgid "Accessing the remote repository failed. Details: %(err)s"
+#: plinth/modules/backups/forms.py:166
+msgid "Passphrase is needed for encryption."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:45
+#: plinth/modules/backups/forms.py:183
+msgid "Remote backup repository already exists."
+msgstr ""
+
+#: plinth/modules/backups/forms.py:189
+msgid "Select verified SSH public key"
+msgstr ""
+
+#: plinth/modules/backups/repository.py:46
 msgid ""
 "Connection refused - make sure you provided correct credentials and the "
 "server is running."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:51
+#: plinth/modules/backups/repository.py:53
 msgid "Connection refused"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:58
+#: plinth/modules/backups/repository.py:62
 msgid "Repository not found"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:65
+#: plinth/modules/backups/repository.py:70
 msgid "Incorrect encryption passphrase"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:70
+#: plinth/modules/backups/repository.py:76
 msgid "SSH access denied"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups.html:47
-msgid "Existing backups"
+msgid "Existing backup locations"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups.html:57
@@ -289,6 +315,7 @@ msgstr ""
 #: plinth/modules/backups/templates/backups_repository_add.html:45
 #: plinth/modules/backups/templates/backups_repository_remove.html:49
 #: plinth/modules/backups/templates/backups_restore.html:52
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:61
 #: plinth/modules/ikiwiki/templates/ikiwiki_delete.html:47
 #: plinth/modules/monkeysphere/templates/monkeysphere.html:67
 #: plinth/modules/networks/templates/connections_delete.html:41
@@ -311,7 +338,7 @@ msgid ""
 msgstr ""
 
 #: plinth/modules/backups/templates/backups_repository_remove.html:46
-#: plinth/modules/backups/views.py:286
+#: plinth/modules/backups/views.py:461
 msgid "Remove Repository"
 msgstr ""
 
@@ -320,7 +347,7 @@ msgid "Restore data from"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups_restore.html:43
-#: plinth/modules/backups/views.py:186
+#: plinth/modules/backups/views.py:192
 msgid "Restore"
 msgstr ""
 
@@ -356,55 +383,102 @@ msgstr ""
 msgid "Upload file"
 msgstr ""
 
-#: plinth/modules/backups/views.py:53
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:40
+msgid "How to verify?"
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:45
+msgid ""
+"Run the following command on the SSH host machine. The output should match "
+"one of the provided options. You can also use dsa, ecdsa, ed25519 etc. "
+"instead of rsa, by choosing the corresponding file."
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:59
+msgid "Verify Host"
+msgstr ""
+
+#: plinth/modules/backups/views.py:57
 msgid "Upload"
 msgstr ""
 
-#: plinth/modules/backups/views.py:56 plinth/modules/ikiwiki/views.py:41
+#: plinth/modules/backups/views.py:60 plinth/modules/ikiwiki/views.py:41
 msgid "Create"
 msgstr ""
 
-#: plinth/modules/backups/views.py:84
+#: plinth/modules/backups/views.py:88
 msgid "Archive created."
 msgstr ""
 
-#: plinth/modules/backups/views.py:111
+#: plinth/modules/backups/views.py:117
 msgid "Delete Archive"
 msgstr ""
 
-#: plinth/modules/backups/views.py:123
+#: plinth/modules/backups/views.py:129
 msgid "Archive deleted."
 msgstr ""
 
-#: plinth/modules/backups/views.py:174
+#: plinth/modules/backups/views.py:180
 msgid "Restored files from backup."
 msgstr ""
 
-#: plinth/modules/backups/views.py:198
+#: plinth/modules/backups/views.py:208
 msgid "No backup file found."
 msgstr ""
 
-#: plinth/modules/backups/views.py:206
+#: plinth/modules/backups/views.py:216
 msgid "Restore from uploaded file"
 msgstr ""
 
-#: plinth/modules/backups/views.py:260
-msgid "Added new repository."
-msgstr ""
-
-#: plinth/modules/backups/views.py:265
+#: plinth/modules/backups/views.py:272
 msgid "Create remote backup repository"
 msgstr ""
 
-#: plinth/modules/backups/views.py:296
+#: plinth/modules/backups/views.py:292
+msgid "Added new remote SSH repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:315
+msgid "Verify SSH hostkey"
+msgstr ""
+
+#: plinth/modules/backups/views.py:349
+msgid "SSH host already verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:358
+msgid "SSH host verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:382
+msgid "SSH host public key could not be verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:384
+msgid "Authentication to remote server failed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:386
+msgid "Error establishing connection to server: {}"
+msgstr ""
+
+#: plinth/modules/backups/views.py:389
+msgid "Repository path is neither empty nor is an existing backups repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:396
+msgid "Repository removed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:471
 msgid "Repository removed. The remote backup itself was not deleted."
 msgstr ""
 
-#: plinth/modules/backups/views.py:304
+#: plinth/modules/backups/views.py:481
 msgid "Unmounting failed!"
 msgstr ""
 
-#: plinth/modules/backups/views.py:313 plinth/modules/backups/views.py:317
+#: plinth/modules/backups/views.py:496 plinth/modules/backups/views.py:500
 msgid "Mounting failed"
 msgstr ""
 
@@ -2034,7 +2108,13 @@ msgid ""
 "the initial setup is currently not supported."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:40
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:36
+msgid ""
+"New users can be registered from any client if public registration is "
+"enabled."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:45
 #, python-format
 msgid ""
 "\n"
@@ -5064,7 +5144,7 @@ msgstr ""
 msgid "Log in"
 msgstr ""
 
-#: plinth/templates/clients.html:28
+#: plinth/templates/clients.html:29
 msgid "Client Apps"
 msgstr ""
 
diff --git a/plinth/locale/bn/LC_MESSAGES/django.po b/plinth/locale/bn/LC_MESSAGES/django.po
index 4ce5d3f7e..a773db00a 100644
--- a/plinth/locale/bn/LC_MESSAGES/django.po
+++ b/plinth/locale/bn/LC_MESSAGES/django.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-06-24 19:48-0400\n"
+"POT-Creation-Date: 2019-07-08 17:31-0400\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -118,127 +118,153 @@ msgid ""
 "network."
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:38 plinth/modules/backups/views.py:50
+#: plinth/modules/backups/__init__.py:41 plinth/modules/backups/views.py:54
 msgid "Backups"
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:41
+#: plinth/modules/backups/__init__.py:44
 msgid "Backups allows creating and managing backup archives."
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:49
+#: plinth/modules/backups/__init__.py:52
 #, python-brace-format
 msgid "{box_name} storage"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:38
+#: plinth/modules/backups/forms.py:47
 #, python-brace-format
 msgid "{app} (No data to backup)"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Included apps"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Apps to include in the backup"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:72
+#: plinth/modules/backups/forms.py:83
 msgid "Select the apps you want to restore"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:85
+#: plinth/modules/backups/forms.py:96
 msgid "Upload File"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:88
+#: plinth/modules/backups/forms.py:98
 msgid "Backup files have to be in .tar.gz format"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:89
+#: plinth/modules/backups/forms.py:99
 msgid "Select the backup file you want to upload"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:94
+#: plinth/modules/backups/forms.py:105
+msgid "Repository path format incorrect."
+msgstr ""
+
+#: plinth/modules/backups/forms.py:112
+#, python-brace-format
+msgid "Invalid username: {username}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:122
+#, python-brace-format
+msgid "Invalid hostname: {hostname}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:126
+#, python-brace-format
+msgid "Invalid directory path: {dir_path}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:132
 msgid "SSH Repository Path"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:95
+#: plinth/modules/backups/forms.py:133
 msgid ""
 "Path of a new or existing repository. Example: <i>user@host:~/path/to/repo/</"
 "i>"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:98
+#: plinth/modules/backups/forms.py:137
 msgid "SSH server password"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:99
+#: plinth/modules/backups/forms.py:138
 msgid ""
 "Password of the SSH Server.<br />SSH key-based authentication is not yet "
 "possible."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:104
+#: plinth/modules/backups/forms.py:142
 msgid "Encryption"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:106
+#: plinth/modules/backups/forms.py:143
 msgid ""
 "\"Key in Repository\" means that a password-protected key is stored with the "
 "backup."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:111 plinth/modules/networks/forms.py:304
+#: plinth/modules/backups/forms.py:147 plinth/modules/networks/forms.py:304
 msgid "Passphrase"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:112
+#: plinth/modules/backups/forms.py:148
 msgid "Passphrase; Only needed when using encryption."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:117
+#: plinth/modules/backups/forms.py:151
 msgid "Confirm Passphrase"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:118
+#: plinth/modules/backups/forms.py:151
 msgid "Repeat the passphrase."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:139
+#: plinth/modules/backups/forms.py:162
 msgid "The entered encryption passphrases do not match"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:151
-#, python-format
-msgid "Accessing the remote repository failed. Details: %(err)s"
+#: plinth/modules/backups/forms.py:166
+msgid "Passphrase is needed for encryption."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:45
+#: plinth/modules/backups/forms.py:183
+msgid "Remote backup repository already exists."
+msgstr ""
+
+#: plinth/modules/backups/forms.py:189
+msgid "Select verified SSH public key"
+msgstr ""
+
+#: plinth/modules/backups/repository.py:46
 msgid ""
 "Connection refused - make sure you provided correct credentials and the "
 "server is running."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:51
+#: plinth/modules/backups/repository.py:53
 msgid "Connection refused"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:58
+#: plinth/modules/backups/repository.py:62
 msgid "Repository not found"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:65
+#: plinth/modules/backups/repository.py:70
 msgid "Incorrect encryption passphrase"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:70
+#: plinth/modules/backups/repository.py:76
 msgid "SSH access denied"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups.html:47
-msgid "Existing backups"
+msgid "Existing backup locations"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups.html:57
@@ -291,6 +317,7 @@ msgstr ""
 #: plinth/modules/backups/templates/backups_repository_add.html:45
 #: plinth/modules/backups/templates/backups_repository_remove.html:49
 #: plinth/modules/backups/templates/backups_restore.html:52
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:61
 #: plinth/modules/ikiwiki/templates/ikiwiki_delete.html:47
 #: plinth/modules/monkeysphere/templates/monkeysphere.html:67
 #: plinth/modules/networks/templates/connections_delete.html:41
@@ -313,7 +340,7 @@ msgid ""
 msgstr ""
 
 #: plinth/modules/backups/templates/backups_repository_remove.html:46
-#: plinth/modules/backups/views.py:286
+#: plinth/modules/backups/views.py:461
 msgid "Remove Repository"
 msgstr ""
 
@@ -322,7 +349,7 @@ msgid "Restore data from"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups_restore.html:43
-#: plinth/modules/backups/views.py:186
+#: plinth/modules/backups/views.py:192
 msgid "Restore"
 msgstr ""
 
@@ -358,55 +385,102 @@ msgstr ""
 msgid "Upload file"
 msgstr ""
 
-#: plinth/modules/backups/views.py:53
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:40
+msgid "How to verify?"
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:45
+msgid ""
+"Run the following command on the SSH host machine. The output should match "
+"one of the provided options. You can also use dsa, ecdsa, ed25519 etc. "
+"instead of rsa, by choosing the corresponding file."
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:59
+msgid "Verify Host"
+msgstr ""
+
+#: plinth/modules/backups/views.py:57
 msgid "Upload"
 msgstr ""
 
-#: plinth/modules/backups/views.py:56 plinth/modules/ikiwiki/views.py:41
+#: plinth/modules/backups/views.py:60 plinth/modules/ikiwiki/views.py:41
 msgid "Create"
 msgstr ""
 
-#: plinth/modules/backups/views.py:84
+#: plinth/modules/backups/views.py:88
 msgid "Archive created."
 msgstr ""
 
-#: plinth/modules/backups/views.py:111
+#: plinth/modules/backups/views.py:117
 msgid "Delete Archive"
 msgstr ""
 
-#: plinth/modules/backups/views.py:123
+#: plinth/modules/backups/views.py:129
 msgid "Archive deleted."
 msgstr ""
 
-#: plinth/modules/backups/views.py:174
+#: plinth/modules/backups/views.py:180
 msgid "Restored files from backup."
 msgstr ""
 
-#: plinth/modules/backups/views.py:198
+#: plinth/modules/backups/views.py:208
 msgid "No backup file found."
 msgstr ""
 
-#: plinth/modules/backups/views.py:206
+#: plinth/modules/backups/views.py:216
 msgid "Restore from uploaded file"
 msgstr ""
 
-#: plinth/modules/backups/views.py:260
-msgid "Added new repository."
-msgstr ""
-
-#: plinth/modules/backups/views.py:265
+#: plinth/modules/backups/views.py:272
 msgid "Create remote backup repository"
 msgstr ""
 
-#: plinth/modules/backups/views.py:296
+#: plinth/modules/backups/views.py:292
+msgid "Added new remote SSH repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:315
+msgid "Verify SSH hostkey"
+msgstr ""
+
+#: plinth/modules/backups/views.py:349
+msgid "SSH host already verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:358
+msgid "SSH host verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:382
+msgid "SSH host public key could not be verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:384
+msgid "Authentication to remote server failed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:386
+msgid "Error establishing connection to server: {}"
+msgstr ""
+
+#: plinth/modules/backups/views.py:389
+msgid "Repository path is neither empty nor is an existing backups repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:396
+msgid "Repository removed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:471
 msgid "Repository removed. The remote backup itself was not deleted."
 msgstr ""
 
-#: plinth/modules/backups/views.py:304
+#: plinth/modules/backups/views.py:481
 msgid "Unmounting failed!"
 msgstr ""
 
-#: plinth/modules/backups/views.py:313 plinth/modules/backups/views.py:317
+#: plinth/modules/backups/views.py:496 plinth/modules/backups/views.py:500
 msgid "Mounting failed"
 msgstr ""
 
@@ -2036,7 +2110,13 @@ msgid ""
 "the initial setup is currently not supported."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:40
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:36
+msgid ""
+"New users can be registered from any client if public registration is "
+"enabled."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:45
 #, python-format
 msgid ""
 "\n"
@@ -5066,7 +5146,7 @@ msgstr ""
 msgid "Log in"
 msgstr ""
 
-#: plinth/templates/clients.html:28
+#: plinth/templates/clients.html:29
 msgid "Client Apps"
 msgstr ""
 
diff --git a/plinth/locale/cs/LC_MESSAGES/django.po b/plinth/locale/cs/LC_MESSAGES/django.po
index ab93f6cfe..4121af230 100644
--- a/plinth/locale/cs/LC_MESSAGES/django.po
+++ b/plinth/locale/cs/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-06-24 19:48-0400\n"
+"POT-Creation-Date: 2019-07-08 17:31-0400\n"
 "PO-Revision-Date: 2019-06-18 22:01+0000\n"
 "Last-Translator: Pavel Borecki <pavel.borecki@gmail.com>\n"
 "Language-Team: Czech <https://hosted.weblate.org/projects/freedombox/plinth/"
@@ -126,53 +126,76 @@ msgstr ""
 "nutné a funguje pouze na vnitřních sítích. Je možné ho vypnout a posílit tak "
 "zabezpečení, hlavně v případě připojení na hostilní místní síť."
 
-#: plinth/modules/backups/__init__.py:38 plinth/modules/backups/views.py:50
+#: plinth/modules/backups/__init__.py:41 plinth/modules/backups/views.py:54
 msgid "Backups"
 msgstr "Zálohy"
 
-#: plinth/modules/backups/__init__.py:41
+#: plinth/modules/backups/__init__.py:44
 msgid "Backups allows creating and managing backup archives."
 msgstr "Zálohy umožňují vytváření a správu zálohových archivů."
 
-#: plinth/modules/backups/__init__.py:49
+#: plinth/modules/backups/__init__.py:52
 #, python-brace-format
 msgid "{box_name} storage"
 msgstr "Úložiště {box_name}"
 
-#: plinth/modules/backups/forms.py:38
+#: plinth/modules/backups/forms.py:47
 #, python-brace-format
 msgid "{app} (No data to backup)"
 msgstr "{app} (žádná data k zálohování)"
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Included apps"
 msgstr "Obsažené aplikace"
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Apps to include in the backup"
 msgstr "Aplikace k zahrnoutí do zálohy"
 
-#: plinth/modules/backups/forms.py:72
+#: plinth/modules/backups/forms.py:83
 msgid "Select the apps you want to restore"
 msgstr "Vyberte aplikace které chcete obnovit"
 
-#: plinth/modules/backups/forms.py:85
+#: plinth/modules/backups/forms.py:96
 msgid "Upload File"
 msgstr "Nahrát soubor"
 
-#: plinth/modules/backups/forms.py:88
+#: plinth/modules/backups/forms.py:98
 msgid "Backup files have to be in .tar.gz format"
 msgstr "Soubory se zálohou mají formát .tar.gz"
 
-#: plinth/modules/backups/forms.py:89
+#: plinth/modules/backups/forms.py:99
 msgid "Select the backup file you want to upload"
 msgstr "Vyberte soubor se zálohou který chcete nahrát"
 
-#: plinth/modules/backups/forms.py:94
+#: plinth/modules/backups/forms.py:105
+#, fuzzy
+#| msgid "Repository not found"
+msgid "Repository path format incorrect."
+msgstr "Repozitář nenalezen"
+
+#: plinth/modules/backups/forms.py:112
+#, fuzzy, python-brace-format
+#| msgid "Invalid server name"
+msgid "Invalid username: {username}"
+msgstr "Neplatný název serveru"
+
+#: plinth/modules/backups/forms.py:122
+#, fuzzy, python-brace-format
+#| msgid "Invalid hostname"
+msgid "Invalid hostname: {hostname}"
+msgstr "Neplatný název stroje"
+
+#: plinth/modules/backups/forms.py:126
+#, python-brace-format
+msgid "Invalid directory path: {dir_path}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:132
 msgid "SSH Repository Path"
 msgstr "Popis umístění SSH repozitáře"
 
-#: plinth/modules/backups/forms.py:95
+#: plinth/modules/backups/forms.py:133
 msgid ""
 "Path of a new or existing repository. Example: <i>user@host:~/path/to/repo/</"
 "i>"
@@ -180,11 +203,11 @@ msgstr ""
 "Popis umístění nového nebo existujícího repozitáře. Příklad: <i>user@host:~/"
 "path/to/repo/</i>"
 
-#: plinth/modules/backups/forms.py:98
+#: plinth/modules/backups/forms.py:137
 msgid "SSH server password"
 msgstr "Heslo SSH serveru"
 
-#: plinth/modules/backups/forms.py:99
+#: plinth/modules/backups/forms.py:138
 msgid ""
 "Password of the SSH Server.<br />SSH key-based authentication is not yet "
 "possible."
@@ -192,11 +215,11 @@ msgstr ""
 "Heslo SSH serveru.<br />Na klíčích založené SSH ověřování totožnosti není "
 "ještě možné."
 
-#: plinth/modules/backups/forms.py:104
+#: plinth/modules/backups/forms.py:142
 msgid "Encryption"
 msgstr "Šifrování"
 
-#: plinth/modules/backups/forms.py:106
+#: plinth/modules/backups/forms.py:143
 msgid ""
 "\"Key in Repository\" means that a password-protected key is stored with the "
 "backup."
@@ -204,32 +227,43 @@ msgstr ""
 "„Klíč v repozitáři“ znamená že heslem chráněný klíč je uložen společně se "
 "zálohou."
 
-#: plinth/modules/backups/forms.py:111 plinth/modules/networks/forms.py:304
+#: plinth/modules/backups/forms.py:147 plinth/modules/networks/forms.py:304
 msgid "Passphrase"
 msgstr "Heslová fráze"
 
-#: plinth/modules/backups/forms.py:112
+#: plinth/modules/backups/forms.py:148
 msgid "Passphrase; Only needed when using encryption."
 msgstr "Heslová fráze, potřebná pouze při použití šifrování."
 
-#: plinth/modules/backups/forms.py:117
+#: plinth/modules/backups/forms.py:151
 msgid "Confirm Passphrase"
 msgstr "Zopakování heslo fráze pro potvrzení"
 
-#: plinth/modules/backups/forms.py:118
+#: plinth/modules/backups/forms.py:151
 msgid "Repeat the passphrase."
 msgstr "Zopakujte heslovou frázi."
 
-#: plinth/modules/backups/forms.py:139
+#: plinth/modules/backups/forms.py:162
 msgid "The entered encryption passphrases do not match"
 msgstr "Zadání heslové fráze se neshodují"
 
-#: plinth/modules/backups/forms.py:151
-#, python-format
-msgid "Accessing the remote repository failed. Details: %(err)s"
-msgstr "Přístup k repozitáři na protějšku se nezdařil. Podrobnosti: %(err)s"
+#: plinth/modules/backups/forms.py:166
+#, fuzzy
+#| msgid "Passphrase; Only needed when using encryption."
+msgid "Passphrase is needed for encryption."
+msgstr "Heslová fráze, potřebná pouze při použití šifrování."
 
-#: plinth/modules/backups/repository.py:45
+#: plinth/modules/backups/forms.py:183
+#, fuzzy
+#| msgid "Create remote backup repository"
+msgid "Remote backup repository already exists."
+msgstr "Vytvořit repozitář pro zálohy na protějšku"
+
+#: plinth/modules/backups/forms.py:189
+msgid "Select verified SSH public key"
+msgstr ""
+
+#: plinth/modules/backups/repository.py:46
 msgid ""
 "Connection refused - make sure you provided correct credentials and the "
 "server is running."
@@ -237,24 +271,26 @@ msgstr ""
 "Spojení odmítnuto – ověřte, že jste zadali správné přihlašovací údaje a "
 "server je spuštěný."
 
-#: plinth/modules/backups/repository.py:51
+#: plinth/modules/backups/repository.py:53
 msgid "Connection refused"
 msgstr "Připojení odmítnuto"
 
-#: plinth/modules/backups/repository.py:58
+#: plinth/modules/backups/repository.py:62
 msgid "Repository not found"
 msgstr "Repozitář nenalezen"
 
-#: plinth/modules/backups/repository.py:65
+#: plinth/modules/backups/repository.py:70
 msgid "Incorrect encryption passphrase"
 msgstr "Nesprávná šifrovací heslová fráze"
 
-#: plinth/modules/backups/repository.py:70
+#: plinth/modules/backups/repository.py:76
 msgid "SSH access denied"
 msgstr "SSH přístup odepřen"
 
 #: plinth/modules/backups/templates/backups.html:47
-msgid "Existing backups"
+#, fuzzy
+#| msgid "Existing backups"
+msgid "Existing backup locations"
 msgstr "Existující zálohy"
 
 #: plinth/modules/backups/templates/backups.html:57
@@ -310,6 +346,7 @@ msgstr "Vytvořit repozitář"
 #: plinth/modules/backups/templates/backups_repository_add.html:45
 #: plinth/modules/backups/templates/backups_repository_remove.html:49
 #: plinth/modules/backups/templates/backups_restore.html:52
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:61
 #: plinth/modules/ikiwiki/templates/ikiwiki_delete.html:47
 #: plinth/modules/monkeysphere/templates/monkeysphere.html:67
 #: plinth/modules/networks/templates/connections_delete.html:41
@@ -337,7 +374,7 @@ msgstr ""
 "    "
 
 #: plinth/modules/backups/templates/backups_repository_remove.html:46
-#: plinth/modules/backups/views.py:286
+#: plinth/modules/backups/views.py:461
 msgid "Remove Repository"
 msgstr "Odebrat repozitář"
 
@@ -346,7 +383,7 @@ msgid "Restore data from"
 msgstr "Obnovit data z"
 
 #: plinth/modules/backups/templates/backups_restore.html:43
-#: plinth/modules/backups/views.py:186
+#: plinth/modules/backups/views.py:192
 msgid "Restore"
 msgstr "Obnovit"
 
@@ -390,55 +427,108 @@ msgstr ""
 msgid "Upload file"
 msgstr "Nahrát soubor"
 
-#: plinth/modules/backups/views.py:53
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:40
+msgid "How to verify?"
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:45
+msgid ""
+"Run the following command on the SSH host machine. The output should match "
+"one of the provided options. You can also use dsa, ecdsa, ed25519 etc. "
+"instead of rsa, by choosing the corresponding file."
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:59
+msgid "Verify Host"
+msgstr ""
+
+#: plinth/modules/backups/views.py:57
 msgid "Upload"
 msgstr "Nahrát"
 
-#: plinth/modules/backups/views.py:56 plinth/modules/ikiwiki/views.py:41
+#: plinth/modules/backups/views.py:60 plinth/modules/ikiwiki/views.py:41
 msgid "Create"
 msgstr "Vytvořit"
 
-#: plinth/modules/backups/views.py:84
+#: plinth/modules/backups/views.py:88
 msgid "Archive created."
 msgstr "Archiv vytvořen."
 
-#: plinth/modules/backups/views.py:111
+#: plinth/modules/backups/views.py:117
 msgid "Delete Archive"
 msgstr "Smazat archiv"
 
-#: plinth/modules/backups/views.py:123
+#: plinth/modules/backups/views.py:129
 msgid "Archive deleted."
 msgstr "Archiv smazán."
 
-#: plinth/modules/backups/views.py:174
+#: plinth/modules/backups/views.py:180
 msgid "Restored files from backup."
 msgstr "Soubory obnovené ze zálohy."
 
-#: plinth/modules/backups/views.py:198
+#: plinth/modules/backups/views.py:208
 msgid "No backup file found."
 msgstr "Nebyl nalezen žádný soubor se zálohou."
 
-#: plinth/modules/backups/views.py:206
+#: plinth/modules/backups/views.py:216
 msgid "Restore from uploaded file"
 msgstr "Obnovit z nahraného souboru"
 
-#: plinth/modules/backups/views.py:260
-msgid "Added new repository."
-msgstr "Přidán nový repozitář."
-
-#: plinth/modules/backups/views.py:265
+#: plinth/modules/backups/views.py:272
 msgid "Create remote backup repository"
 msgstr "Vytvořit repozitář pro zálohy na protějšku"
 
-#: plinth/modules/backups/views.py:296
+#: plinth/modules/backups/views.py:292
+#, fuzzy
+#| msgid "Added new repository."
+msgid "Added new remote SSH repository."
+msgstr "Přidán nový repozitář."
+
+#: plinth/modules/backups/views.py:315
+msgid "Verify SSH hostkey"
+msgstr ""
+
+#: plinth/modules/backups/views.py:349
+msgid "SSH host already verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:358
+msgid "SSH host verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:382
+msgid "SSH host public key could not be verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:384
+msgid "Authentication to remote server failed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:386
+#, fuzzy
+#| msgid "Error installing application: {error}"
+msgid "Error establishing connection to server: {}"
+msgstr "Chyba při instalaci aplikace: {error}"
+
+#: plinth/modules/backups/views.py:389
+msgid "Repository path is neither empty nor is an existing backups repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:396
+#, fuzzy
+#| msgid "Repository not found"
+msgid "Repository removed."
+msgstr "Repozitář nenalezen"
+
+#: plinth/modules/backups/views.py:471
 msgid "Repository removed. The remote backup itself was not deleted."
 msgstr "Repozitář odebrán. Záloha na protějšku jako taková smazána nebyla."
 
-#: plinth/modules/backups/views.py:304
+#: plinth/modules/backups/views.py:481
 msgid "Unmounting failed!"
 msgstr "Odpojení se nezdařilo!"
 
-#: plinth/modules/backups/views.py:313 plinth/modules/backups/views.py:317
+#: plinth/modules/backups/views.py:496 plinth/modules/backups/views.py:500
 msgid "Mounting failed"
 msgstr "Připojení (mount) se nezdařilo"
 
@@ -2362,7 +2452,13 @@ msgstr ""
 "%(domain_name)s</em>. Změna doménového názvu po úvodním nastavení není v "
 "současnosti podporována."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:40
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:36
+msgid ""
+"New users can be registered from any client if public registration is "
+"enabled."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:45
 #, python-format
 msgid ""
 "\n"
@@ -5802,7 +5898,7 @@ msgstr "Vyberte jazyk"
 msgid "Log in"
 msgstr "Přihlásit"
 
-#: plinth/templates/clients.html:28
+#: plinth/templates/clients.html:29
 msgid "Client Apps"
 msgstr "Klientské aplikace"
 
@@ -6021,6 +6117,9 @@ msgstr "Aplikace vypnuta"
 msgid "Gujarati"
 msgstr "gudžarátština"
 
+#~ msgid "Accessing the remote repository failed. Details: %(err)s"
+#~ msgstr "Přístup k repozitáři na protějšku se nezdařil. Podrobnosti: %(err)s"
+
 #~ msgid "Tor Anonymity Network"
 #~ msgstr "Anonymní síť Tor"
 
diff --git a/plinth/locale/da/LC_MESSAGES/django.po b/plinth/locale/da/LC_MESSAGES/django.po
index 82a5cdcdd..0970f181d 100644
--- a/plinth/locale/da/LC_MESSAGES/django.po
+++ b/plinth/locale/da/LC_MESSAGES/django.po
@@ -9,7 +9,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: FreedomBox UI\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-06-24 19:48-0400\n"
+"POT-Creation-Date: 2019-07-08 17:31-0400\n"
 "PO-Revision-Date: 2016-07-03 21:44+0000\n"
 "Last-Translator: Mikkel Kirkgaard Nielsen <memb_weblate@mikini.dk>\n"
 "Language-Team: Danish <https://hosted.weblate.org/projects/freedombox/plinth/"
@@ -131,142 +131,172 @@ msgstr ""
 "Deaktivering vil forbedre sikkerheden, specielt hvis du forbinder til et "
 "fjendtligt lokalnetværk."
 
-#: plinth/modules/backups/__init__.py:38 plinth/modules/backups/views.py:50
+#: plinth/modules/backups/__init__.py:41 plinth/modules/backups/views.py:54
 msgid "Backups"
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:41
+#: plinth/modules/backups/__init__.py:44
 msgid "Backups allows creating and managing backup archives."
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:49
+#: plinth/modules/backups/__init__.py:52
 #, fuzzy, python-brace-format
 #| msgid "{box_name} Manual"
 msgid "{box_name} storage"
 msgstr "{box_name} Brugervejledning"
 
-#: plinth/modules/backups/forms.py:38
+#: plinth/modules/backups/forms.py:47
 #, python-brace-format
 msgid "{app} (No data to backup)"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Included apps"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Apps to include in the backup"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:72
+#: plinth/modules/backups/forms.py:83
 #, fuzzy
 #| msgid "The subdomain you want to register"
 msgid "Select the apps you want to restore"
 msgstr "Subdomænet du vil registrere"
 
-#: plinth/modules/backups/forms.py:85
+#: plinth/modules/backups/forms.py:96
 msgid "Upload File"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:88
+#: plinth/modules/backups/forms.py:98
 msgid "Backup files have to be in .tar.gz format"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:89
+#: plinth/modules/backups/forms.py:99
 msgid "Select the backup file you want to upload"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:94
+#: plinth/modules/backups/forms.py:105
+#, fuzzy
+#| msgid "packages not found"
+msgid "Repository path format incorrect."
+msgstr "pakker ikke fundet"
+
+#: plinth/modules/backups/forms.py:112
+#, fuzzy, python-brace-format
+#| msgid "Invalid server name"
+msgid "Invalid username: {username}"
+msgstr "Ugyldigt servernavn"
+
+#: plinth/modules/backups/forms.py:122
+#, fuzzy, python-brace-format
+#| msgid "Invalid hostname"
+msgid "Invalid hostname: {hostname}"
+msgstr "Ugyldigt værtsnavn"
+
+#: plinth/modules/backups/forms.py:126
+#, python-brace-format
+msgid "Invalid directory path: {dir_path}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:132
 msgid "SSH Repository Path"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:95
+#: plinth/modules/backups/forms.py:133
 msgid ""
 "Path of a new or existing repository. Example: <i>user@host:~/path/to/repo/</"
 "i>"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:98
+#: plinth/modules/backups/forms.py:137
 #, fuzzy
 #| msgid "Save Password"
 msgid "SSH server password"
 msgstr "Gem Kodeord"
 
-#: plinth/modules/backups/forms.py:99
+#: plinth/modules/backups/forms.py:138
 msgid ""
 "Password of the SSH Server.<br />SSH key-based authentication is not yet "
 "possible."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:104
+#: plinth/modules/backups/forms.py:142
 #, fuzzy
 #| msgid "Description"
 msgid "Encryption"
 msgstr "Beskrivelse"
 
-#: plinth/modules/backups/forms.py:106
+#: plinth/modules/backups/forms.py:143
 msgid ""
 "\"Key in Repository\" means that a password-protected key is stored with the "
 "backup."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:111 plinth/modules/networks/forms.py:304
+#: plinth/modules/backups/forms.py:147 plinth/modules/networks/forms.py:304
 msgid "Passphrase"
 msgstr "Kodesætning"
 
-#: plinth/modules/backups/forms.py:112
+#: plinth/modules/backups/forms.py:148
 msgid "Passphrase; Only needed when using encryption."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:117
+#: plinth/modules/backups/forms.py:151
 #, fuzzy
 #| msgid "Passphrase"
 msgid "Confirm Passphrase"
 msgstr "Kodesætning"
 
-#: plinth/modules/backups/forms.py:118
+#: plinth/modules/backups/forms.py:151
 msgid "Repeat the passphrase."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:139
+#: plinth/modules/backups/forms.py:162
 msgid "The entered encryption passphrases do not match"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:151
-#, python-format
-msgid "Accessing the remote repository failed. Details: %(err)s"
+#: plinth/modules/backups/forms.py:166
+msgid "Passphrase is needed for encryption."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:45
+#: plinth/modules/backups/forms.py:183
+msgid "Remote backup repository already exists."
+msgstr ""
+
+#: plinth/modules/backups/forms.py:189
+msgid "Select verified SSH public key"
+msgstr ""
+
+#: plinth/modules/backups/repository.py:46
 msgid ""
 "Connection refused - make sure you provided correct credentials and the "
 "server is running."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:51
+#: plinth/modules/backups/repository.py:53
 #, fuzzy
 #| msgid "Connection Type"
 msgid "Connection refused"
 msgstr "Forbindelsestype"
 
-#: plinth/modules/backups/repository.py:58
+#: plinth/modules/backups/repository.py:62
 #, fuzzy
 #| msgid "packages not found"
 msgid "Repository not found"
 msgstr "pakker ikke fundet"
 
-#: plinth/modules/backups/repository.py:65
+#: plinth/modules/backups/repository.py:70
 msgid "Incorrect encryption passphrase"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:70
+#: plinth/modules/backups/repository.py:76
 msgid "SSH access denied"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups.html:47
 #, fuzzy
 #| msgid "Existing custom services"
-msgid "Existing backups"
+msgid "Existing backup locations"
 msgstr "Eksisterende brugerdefinerede tjenester"
 
 #: plinth/modules/backups/templates/backups.html:57
@@ -330,6 +360,7 @@ msgstr "Opret Bruger"
 #: plinth/modules/backups/templates/backups_repository_add.html:45
 #: plinth/modules/backups/templates/backups_repository_remove.html:49
 #: plinth/modules/backups/templates/backups_restore.html:52
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:61
 #: plinth/modules/ikiwiki/templates/ikiwiki_delete.html:47
 #: plinth/modules/monkeysphere/templates/monkeysphere.html:67
 #: plinth/modules/networks/templates/connections_delete.html:41
@@ -352,7 +383,7 @@ msgid ""
 msgstr ""
 
 #: plinth/modules/backups/templates/backups_repository_remove.html:46
-#: plinth/modules/backups/views.py:286
+#: plinth/modules/backups/views.py:461
 msgid "Remove Repository"
 msgstr ""
 
@@ -363,7 +394,7 @@ msgid "Restore data from"
 msgstr "Slet %(name)s"
 
 #: plinth/modules/backups/templates/backups_restore.html:43
-#: plinth/modules/backups/views.py:186
+#: plinth/modules/backups/views.py:192
 #, fuzzy
 #| msgid "reStore"
 msgid "Restore"
@@ -405,61 +436,114 @@ msgstr ""
 msgid "Upload file"
 msgstr "Hent min profil"
 
-#: plinth/modules/backups/views.py:53
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:40
+msgid "How to verify?"
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:45
+msgid ""
+"Run the following command on the SSH host machine. The output should match "
+"one of the provided options. You can also use dsa, ecdsa, ed25519 etc. "
+"instead of rsa, by choosing the corresponding file."
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:59
+msgid "Verify Host"
+msgstr ""
+
+#: plinth/modules/backups/views.py:57
 #, fuzzy
 #| msgid "Download my profile"
 msgid "Upload"
 msgstr "Hent min profil"
 
-#: plinth/modules/backups/views.py:56 plinth/modules/ikiwiki/views.py:41
+#: plinth/modules/backups/views.py:60 plinth/modules/ikiwiki/views.py:41
 msgid "Create"
 msgstr "Opret"
 
-#: plinth/modules/backups/views.py:84
+#: plinth/modules/backups/views.py:88
 msgid "Archive created."
 msgstr ""
 
-#: plinth/modules/backups/views.py:111
+#: plinth/modules/backups/views.py:117
 #, fuzzy
 #| msgid "Delete"
 msgid "Delete Archive"
 msgstr "Slet"
 
-#: plinth/modules/backups/views.py:123
+#: plinth/modules/backups/views.py:129
 #, fuzzy
 #| msgid "{name} deleted."
 msgid "Archive deleted."
 msgstr "{name} slettet."
 
-#: plinth/modules/backups/views.py:174
+#: plinth/modules/backups/views.py:180
 msgid "Restored files from backup."
 msgstr ""
 
-#: plinth/modules/backups/views.py:198
+#: plinth/modules/backups/views.py:208
 msgid "No backup file found."
 msgstr ""
 
-#: plinth/modules/backups/views.py:206
+#: plinth/modules/backups/views.py:216
 msgid "Restore from uploaded file"
 msgstr ""
 
-#: plinth/modules/backups/views.py:260
-msgid "Added new repository."
-msgstr ""
-
-#: plinth/modules/backups/views.py:265
+#: plinth/modules/backups/views.py:272
 msgid "Create remote backup repository"
 msgstr ""
 
-#: plinth/modules/backups/views.py:296
+#: plinth/modules/backups/views.py:292
+#, fuzzy
+#| msgid "Create User"
+msgid "Added new remote SSH repository."
+msgstr "Opret Bruger"
+
+#: plinth/modules/backups/views.py:315
+msgid "Verify SSH hostkey"
+msgstr ""
+
+#: plinth/modules/backups/views.py:349
+msgid "SSH host already verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:358
+msgid "SSH host verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:382
+msgid "SSH host public key could not be verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:384
+msgid "Authentication to remote server failed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:386
+#, fuzzy
+#| msgid "Error installing application: {error}"
+msgid "Error establishing connection to server: {}"
+msgstr "Kunne ikke installere applikation: {error}"
+
+#: plinth/modules/backups/views.py:389
+msgid "Repository path is neither empty nor is an existing backups repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:396
+#, fuzzy
+#| msgid "packages not found"
+msgid "Repository removed."
+msgstr "pakker ikke fundet"
+
+#: plinth/modules/backups/views.py:471
 msgid "Repository removed. The remote backup itself was not deleted."
 msgstr ""
 
-#: plinth/modules/backups/views.py:304
+#: plinth/modules/backups/views.py:481
 msgid "Unmounting failed!"
 msgstr ""
 
-#: plinth/modules/backups/views.py:313 plinth/modules/backups/views.py:317
+#: plinth/modules/backups/views.py:496 plinth/modules/backups/views.py:500
 msgid "Mounting failed"
 msgstr ""
 
@@ -2369,7 +2453,13 @@ msgstr ""
 "vil se ud som <i>brugernavn@%(domainname)s</i>. Du kan konfigurere systemets "
 "domæne på <a href=\"%(index_url)s\">Konfigurer</a> siden."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:40
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:36
+msgid ""
+"New users can be registered from any client if public registration is "
+"enabled."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:45
 #, python-format
 msgid ""
 "\n"
@@ -5894,7 +5984,7 @@ msgstr "Sprog"
 msgid "Log in"
 msgstr "Log ind"
 
-#: plinth/templates/clients.html:28
+#: plinth/templates/clients.html:29
 #, fuzzy
 #| msgid "Quassel IRC Client"
 msgid "Client Apps"
diff --git a/plinth/locale/de/LC_MESSAGES/django.po b/plinth/locale/de/LC_MESSAGES/django.po
index 6bcdf3e96..72b82dc81 100644
--- a/plinth/locale/de/LC_MESSAGES/django.po
+++ b/plinth/locale/de/LC_MESSAGES/django.po
@@ -9,7 +9,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: FreedomBox UI\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-06-24 19:48-0400\n"
+"POT-Creation-Date: 2019-07-08 17:31-0400\n"
 "PO-Revision-Date: 2019-06-18 22:01+0000\n"
 "Last-Translator: ssantos <ssantos@web.de>\n"
 "Language-Team: German <https://hosted.weblate.org/projects/freedombox/plinth/"
@@ -129,53 +129,76 @@ msgstr ""
 "deaktiviert werden, um die Sicherheit zu erhöhen, vor allem in einem "
 "unsicheren lokalen Netz."
 
-#: plinth/modules/backups/__init__.py:38 plinth/modules/backups/views.py:50
+#: plinth/modules/backups/__init__.py:41 plinth/modules/backups/views.py:54
 msgid "Backups"
 msgstr "Backups"
 
-#: plinth/modules/backups/__init__.py:41
+#: plinth/modules/backups/__init__.py:44
 msgid "Backups allows creating and managing backup archives."
 msgstr "Backups ermöglicht das Erzeugen und Verwalten von Backup-Archiven."
 
-#: plinth/modules/backups/__init__.py:49
+#: plinth/modules/backups/__init__.py:52
 #, python-brace-format
 msgid "{box_name} storage"
 msgstr "{box_name}-Speichermedien"
 
-#: plinth/modules/backups/forms.py:38
+#: plinth/modules/backups/forms.py:47
 #, python-brace-format
 msgid "{app} (No data to backup)"
 msgstr "{app} (Keine Dateien zu sichern)"
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Included apps"
 msgstr "Einbezogene Apps"
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Apps to include in the backup"
 msgstr "Apps, die in das Backup einbezogen werden"
 
-#: plinth/modules/backups/forms.py:72
+#: plinth/modules/backups/forms.py:83
 msgid "Select the apps you want to restore"
 msgstr "Wählen Sie die Apps aus, die Sie wiederherstellen möchten"
 
-#: plinth/modules/backups/forms.py:85
+#: plinth/modules/backups/forms.py:96
 msgid "Upload File"
 msgstr "Datei hochladen"
 
-#: plinth/modules/backups/forms.py:88
+#: plinth/modules/backups/forms.py:98
 msgid "Backup files have to be in .tar.gz format"
 msgstr "Backup-Dateien müssen im Format .tar.gz vorliegen"
 
-#: plinth/modules/backups/forms.py:89
+#: plinth/modules/backups/forms.py:99
 msgid "Select the backup file you want to upload"
 msgstr "Auswählen der Wiederherstellungsdatei zum Hochladen"
 
-#: plinth/modules/backups/forms.py:94
+#: plinth/modules/backups/forms.py:105
+#, fuzzy
+#| msgid "Repository not found"
+msgid "Repository path format incorrect."
+msgstr "Archiv nicht gefunden"
+
+#: plinth/modules/backups/forms.py:112
+#, fuzzy, python-brace-format
+#| msgid "Invalid server name"
+msgid "Invalid username: {username}"
+msgstr "Ungültiger Servername"
+
+#: plinth/modules/backups/forms.py:122
+#, fuzzy, python-brace-format
+#| msgid "Invalid hostname"
+msgid "Invalid hostname: {hostname}"
+msgstr "Ungültiger Hostname"
+
+#: plinth/modules/backups/forms.py:126
+#, python-brace-format
+msgid "Invalid directory path: {dir_path}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:132
 msgid "SSH Repository Path"
 msgstr "SSH-Archiv-Pfad"
 
-#: plinth/modules/backups/forms.py:95
+#: plinth/modules/backups/forms.py:133
 msgid ""
 "Path of a new or existing repository. Example: <i>user@host:~/path/to/repo/</"
 "i>"
@@ -183,11 +206,11 @@ msgstr ""
 "Pfad eines neuen oder existierenden Archivs. Beispiel: "
 "<i>benutzer@hostrechner:~/pfad/zum/archiv/</i>"
 
-#: plinth/modules/backups/forms.py:98
+#: plinth/modules/backups/forms.py:137
 msgid "SSH server password"
 msgstr "SSH-Server-Passwort"
 
-#: plinth/modules/backups/forms.py:99
+#: plinth/modules/backups/forms.py:138
 msgid ""
 "Password of the SSH Server.<br />SSH key-based authentication is not yet "
 "possible."
@@ -195,11 +218,11 @@ msgstr ""
 "Passwort des SSH-Hostrechners.<br />SSH-Schlüssel-basierte Authentifizierung "
 "ist noch nicht möglich."
 
-#: plinth/modules/backups/forms.py:104
+#: plinth/modules/backups/forms.py:142
 msgid "Encryption"
 msgstr "Verschlüsselung"
 
-#: plinth/modules/backups/forms.py:106
+#: plinth/modules/backups/forms.py:143
 msgid ""
 "\"Key in Repository\" means that a password-protected key is stored with the "
 "backup."
@@ -207,32 +230,43 @@ msgstr ""
 "„Schlüssel im Archiv“ bedeutet, dass ein passwortgeschützter Schlüssel mit "
 "dem Backup gespeichert wird."
 
-#: plinth/modules/backups/forms.py:111 plinth/modules/networks/forms.py:304
+#: plinth/modules/backups/forms.py:147 plinth/modules/networks/forms.py:304
 msgid "Passphrase"
 msgstr "Passwort"
 
-#: plinth/modules/backups/forms.py:112
+#: plinth/modules/backups/forms.py:148
 msgid "Passphrase; Only needed when using encryption."
 msgstr "Passphrase; Nur notwendig, wenn Verschlüsselung genutzt wird."
 
-#: plinth/modules/backups/forms.py:117
+#: plinth/modules/backups/forms.py:151
 msgid "Confirm Passphrase"
 msgstr "Passphrase bestätigen"
 
-#: plinth/modules/backups/forms.py:118
+#: plinth/modules/backups/forms.py:151
 msgid "Repeat the passphrase."
 msgstr "Passphrase wiederholen."
 
-#: plinth/modules/backups/forms.py:139
+#: plinth/modules/backups/forms.py:162
 msgid "The entered encryption passphrases do not match"
 msgstr "Die eingegebenen Verschlüsselungs-Passphrasen stimmen nicht überein"
 
-#: plinth/modules/backups/forms.py:151
-#, python-format
-msgid "Accessing the remote repository failed. Details: %(err)s"
-msgstr "Zugriff auf das Remote-Archiv fehlgeschlagen. Details: %(err)s"
+#: plinth/modules/backups/forms.py:166
+#, fuzzy
+#| msgid "Passphrase; Only needed when using encryption."
+msgid "Passphrase is needed for encryption."
+msgstr "Passphrase; Nur notwendig, wenn Verschlüsselung genutzt wird."
 
-#: plinth/modules/backups/repository.py:45
+#: plinth/modules/backups/forms.py:183
+#, fuzzy
+#| msgid "Create remote backup repository"
+msgid "Remote backup repository already exists."
+msgstr "Remote-Backup-Archiv anlegen"
+
+#: plinth/modules/backups/forms.py:189
+msgid "Select verified SSH public key"
+msgstr ""
+
+#: plinth/modules/backups/repository.py:46
 msgid ""
 "Connection refused - make sure you provided correct credentials and the "
 "server is running."
@@ -240,24 +274,26 @@ msgstr ""
 "Verbindung verweigert - vergewissern Sie sich, dass die Anmeldeinformationen "
 "korrekt sind und dass der Hostrechner läuft."
 
-#: plinth/modules/backups/repository.py:51
+#: plinth/modules/backups/repository.py:53
 msgid "Connection refused"
 msgstr "Verbindung verweigert"
 
-#: plinth/modules/backups/repository.py:58
+#: plinth/modules/backups/repository.py:62
 msgid "Repository not found"
 msgstr "Archiv nicht gefunden"
 
-#: plinth/modules/backups/repository.py:65
+#: plinth/modules/backups/repository.py:70
 msgid "Incorrect encryption passphrase"
 msgstr "Falsche Verschlüsselungs-Passphrase"
 
-#: plinth/modules/backups/repository.py:70
+#: plinth/modules/backups/repository.py:76
 msgid "SSH access denied"
 msgstr "SSH-Zugriff verweigert"
 
 #: plinth/modules/backups/templates/backups.html:47
-msgid "Existing backups"
+#, fuzzy
+#| msgid "Existing backups"
+msgid "Existing backup locations"
 msgstr "Vorhandene Sicherungen"
 
 #: plinth/modules/backups/templates/backups.html:57
@@ -314,6 +350,7 @@ msgstr "Archiv anlegen"
 #: plinth/modules/backups/templates/backups_repository_add.html:45
 #: plinth/modules/backups/templates/backups_repository_remove.html:49
 #: plinth/modules/backups/templates/backups_restore.html:52
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:61
 #: plinth/modules/ikiwiki/templates/ikiwiki_delete.html:47
 #: plinth/modules/monkeysphere/templates/monkeysphere.html:67
 #: plinth/modules/networks/templates/connections_delete.html:41
@@ -342,7 +379,7 @@ msgstr ""
 "    "
 
 #: plinth/modules/backups/templates/backups_repository_remove.html:46
-#: plinth/modules/backups/views.py:286
+#: plinth/modules/backups/views.py:461
 msgid "Remove Repository"
 msgstr "Archiv entfernen"
 
@@ -351,7 +388,7 @@ msgid "Restore data from"
 msgstr "Wiederherstellen von Daten aus"
 
 #: plinth/modules/backups/templates/backups_restore.html:43
-#: plinth/modules/backups/views.py:186
+#: plinth/modules/backups/views.py:192
 msgid "Restore"
 msgstr "Wiederherstellen"
 
@@ -397,55 +434,108 @@ msgstr ""
 msgid "Upload file"
 msgstr "Datei hochladen"
 
-#: plinth/modules/backups/views.py:53
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:40
+msgid "How to verify?"
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:45
+msgid ""
+"Run the following command on the SSH host machine. The output should match "
+"one of the provided options. You can also use dsa, ecdsa, ed25519 etc. "
+"instead of rsa, by choosing the corresponding file."
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:59
+msgid "Verify Host"
+msgstr ""
+
+#: plinth/modules/backups/views.py:57
 msgid "Upload"
 msgstr "Hochladen"
 
-#: plinth/modules/backups/views.py:56 plinth/modules/ikiwiki/views.py:41
+#: plinth/modules/backups/views.py:60 plinth/modules/ikiwiki/views.py:41
 msgid "Create"
 msgstr "Anlegen"
 
-#: plinth/modules/backups/views.py:84
+#: plinth/modules/backups/views.py:88
 msgid "Archive created."
 msgstr "Archiv angelegt."
 
-#: plinth/modules/backups/views.py:111
+#: plinth/modules/backups/views.py:117
 msgid "Delete Archive"
 msgstr "Archiv löschen"
 
-#: plinth/modules/backups/views.py:123
+#: plinth/modules/backups/views.py:129
 msgid "Archive deleted."
 msgstr "Archiv gelöscht."
 
-#: plinth/modules/backups/views.py:174
+#: plinth/modules/backups/views.py:180
 msgid "Restored files from backup."
 msgstr "Dateien aus Backup wiederhergestellt."
 
-#: plinth/modules/backups/views.py:198
+#: plinth/modules/backups/views.py:208
 msgid "No backup file found."
 msgstr "Keine Sicherungsdatei gefunden."
 
-#: plinth/modules/backups/views.py:206
+#: plinth/modules/backups/views.py:216
 msgid "Restore from uploaded file"
 msgstr "Wiederherstellen aus hochgeladener Datei"
 
-#: plinth/modules/backups/views.py:260
-msgid "Added new repository."
-msgstr "Neues Archiv hinzugefügt."
-
-#: plinth/modules/backups/views.py:265
+#: plinth/modules/backups/views.py:272
 msgid "Create remote backup repository"
 msgstr "Remote-Backup-Archiv anlegen"
 
-#: plinth/modules/backups/views.py:296
+#: plinth/modules/backups/views.py:292
+#, fuzzy
+#| msgid "Added new repository."
+msgid "Added new remote SSH repository."
+msgstr "Neues Archiv hinzugefügt."
+
+#: plinth/modules/backups/views.py:315
+msgid "Verify SSH hostkey"
+msgstr ""
+
+#: plinth/modules/backups/views.py:349
+msgid "SSH host already verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:358
+msgid "SSH host verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:382
+msgid "SSH host public key could not be verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:384
+msgid "Authentication to remote server failed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:386
+#, fuzzy
+#| msgid "Error installing application: {error}"
+msgid "Error establishing connection to server: {}"
+msgstr "Fehler beim Installieren der Anwendung: {error}"
+
+#: plinth/modules/backups/views.py:389
+msgid "Repository path is neither empty nor is an existing backups repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:396
+#, fuzzy
+#| msgid "Repository not found"
+msgid "Repository removed."
+msgstr "Archiv nicht gefunden"
+
+#: plinth/modules/backups/views.py:471
 msgid "Repository removed. The remote backup itself was not deleted."
 msgstr "Archiv entfernt. Das Remote-Archiv selbst wurde nicht gelöscht."
 
-#: plinth/modules/backups/views.py:304
+#: plinth/modules/backups/views.py:481
 msgid "Unmounting failed!"
 msgstr "Aushängen fehlgeschlagen!"
 
-#: plinth/modules/backups/views.py:313 plinth/modules/backups/views.py:317
+#: plinth/modules/backups/views.py:496 plinth/modules/backups/views.py:500
 msgid "Mounting failed"
 msgstr "Einhängen fehlgeschlagen"
 
@@ -2386,7 +2476,13 @@ msgstr ""
 "IDs erscheinen als <em>Nutzername:%(domain_name)s</em>. Änderungen der "
 "Domain nach der ersten Konfiguration werden derzeit nicht unterstützt."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:40
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:36
+msgid ""
+"New users can be registered from any client if public registration is "
+"enabled."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:45
 #, python-format
 msgid ""
 "\n"
@@ -5895,7 +5991,7 @@ msgstr "Sprache wählen"
 msgid "Log in"
 msgstr "Anmelden"
 
-#: plinth/templates/clients.html:28
+#: plinth/templates/clients.html:29
 msgid "Client Apps"
 msgstr "Client-Anwendungen"
 
@@ -6114,6 +6210,9 @@ msgstr "Anwendung deaktiviert"
 msgid "Gujarati"
 msgstr "Gujarati"
 
+#~ msgid "Accessing the remote repository failed. Details: %(err)s"
+#~ msgstr "Zugriff auf das Remote-Archiv fehlgeschlagen. Details: %(err)s"
+
 #~ msgid "Tor Anonymity Network"
 #~ msgstr "Tor-Anonymisierungsnetzwerk"
 
diff --git a/plinth/locale/django.pot b/plinth/locale/django.pot
index fe366136c..ae7da9d8c 100644
--- a/plinth/locale/django.pot
+++ b/plinth/locale/django.pot
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-06-24 19:48-0400\n"
+"POT-Creation-Date: 2019-07-08 17:31-0400\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -117,127 +117,153 @@ msgid ""
 "network."
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:38 plinth/modules/backups/views.py:50
+#: plinth/modules/backups/__init__.py:41 plinth/modules/backups/views.py:54
 msgid "Backups"
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:41
+#: plinth/modules/backups/__init__.py:44
 msgid "Backups allows creating and managing backup archives."
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:49
+#: plinth/modules/backups/__init__.py:52
 #, python-brace-format
 msgid "{box_name} storage"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:38
+#: plinth/modules/backups/forms.py:47
 #, python-brace-format
 msgid "{app} (No data to backup)"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Included apps"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Apps to include in the backup"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:72
+#: plinth/modules/backups/forms.py:83
 msgid "Select the apps you want to restore"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:85
+#: plinth/modules/backups/forms.py:96
 msgid "Upload File"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:88
+#: plinth/modules/backups/forms.py:98
 msgid "Backup files have to be in .tar.gz format"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:89
+#: plinth/modules/backups/forms.py:99
 msgid "Select the backup file you want to upload"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:94
+#: plinth/modules/backups/forms.py:105
+msgid "Repository path format incorrect."
+msgstr ""
+
+#: plinth/modules/backups/forms.py:112
+#, python-brace-format
+msgid "Invalid username: {username}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:122
+#, python-brace-format
+msgid "Invalid hostname: {hostname}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:126
+#, python-brace-format
+msgid "Invalid directory path: {dir_path}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:132
 msgid "SSH Repository Path"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:95
+#: plinth/modules/backups/forms.py:133
 msgid ""
 "Path of a new or existing repository. Example: <i>user@host:~/path/to/repo/</"
 "i>"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:98
+#: plinth/modules/backups/forms.py:137
 msgid "SSH server password"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:99
+#: plinth/modules/backups/forms.py:138
 msgid ""
 "Password of the SSH Server.<br />SSH key-based authentication is not yet "
 "possible."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:104
+#: plinth/modules/backups/forms.py:142
 msgid "Encryption"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:106
+#: plinth/modules/backups/forms.py:143
 msgid ""
 "\"Key in Repository\" means that a password-protected key is stored with the "
 "backup."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:111 plinth/modules/networks/forms.py:304
+#: plinth/modules/backups/forms.py:147 plinth/modules/networks/forms.py:304
 msgid "Passphrase"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:112
+#: plinth/modules/backups/forms.py:148
 msgid "Passphrase; Only needed when using encryption."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:117
+#: plinth/modules/backups/forms.py:151
 msgid "Confirm Passphrase"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:118
+#: plinth/modules/backups/forms.py:151
 msgid "Repeat the passphrase."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:139
+#: plinth/modules/backups/forms.py:162
 msgid "The entered encryption passphrases do not match"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:151
-#, python-format
-msgid "Accessing the remote repository failed. Details: %(err)s"
+#: plinth/modules/backups/forms.py:166
+msgid "Passphrase is needed for encryption."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:45
+#: plinth/modules/backups/forms.py:183
+msgid "Remote backup repository already exists."
+msgstr ""
+
+#: plinth/modules/backups/forms.py:189
+msgid "Select verified SSH public key"
+msgstr ""
+
+#: plinth/modules/backups/repository.py:46
 msgid ""
 "Connection refused - make sure you provided correct credentials and the "
 "server is running."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:51
+#: plinth/modules/backups/repository.py:53
 msgid "Connection refused"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:58
+#: plinth/modules/backups/repository.py:62
 msgid "Repository not found"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:65
+#: plinth/modules/backups/repository.py:70
 msgid "Incorrect encryption passphrase"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:70
+#: plinth/modules/backups/repository.py:76
 msgid "SSH access denied"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups.html:47
-msgid "Existing backups"
+msgid "Existing backup locations"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups.html:57
@@ -290,6 +316,7 @@ msgstr ""
 #: plinth/modules/backups/templates/backups_repository_add.html:45
 #: plinth/modules/backups/templates/backups_repository_remove.html:49
 #: plinth/modules/backups/templates/backups_restore.html:52
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:61
 #: plinth/modules/ikiwiki/templates/ikiwiki_delete.html:47
 #: plinth/modules/monkeysphere/templates/monkeysphere.html:67
 #: plinth/modules/networks/templates/connections_delete.html:41
@@ -312,7 +339,7 @@ msgid ""
 msgstr ""
 
 #: plinth/modules/backups/templates/backups_repository_remove.html:46
-#: plinth/modules/backups/views.py:286
+#: plinth/modules/backups/views.py:461
 msgid "Remove Repository"
 msgstr ""
 
@@ -321,7 +348,7 @@ msgid "Restore data from"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups_restore.html:43
-#: plinth/modules/backups/views.py:186
+#: plinth/modules/backups/views.py:192
 msgid "Restore"
 msgstr ""
 
@@ -357,55 +384,102 @@ msgstr ""
 msgid "Upload file"
 msgstr ""
 
-#: plinth/modules/backups/views.py:53
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:40
+msgid "How to verify?"
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:45
+msgid ""
+"Run the following command on the SSH host machine. The output should match "
+"one of the provided options. You can also use dsa, ecdsa, ed25519 etc. "
+"instead of rsa, by choosing the corresponding file."
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:59
+msgid "Verify Host"
+msgstr ""
+
+#: plinth/modules/backups/views.py:57
 msgid "Upload"
 msgstr ""
 
-#: plinth/modules/backups/views.py:56 plinth/modules/ikiwiki/views.py:41
+#: plinth/modules/backups/views.py:60 plinth/modules/ikiwiki/views.py:41
 msgid "Create"
 msgstr ""
 
-#: plinth/modules/backups/views.py:84
+#: plinth/modules/backups/views.py:88
 msgid "Archive created."
 msgstr ""
 
-#: plinth/modules/backups/views.py:111
+#: plinth/modules/backups/views.py:117
 msgid "Delete Archive"
 msgstr ""
 
-#: plinth/modules/backups/views.py:123
+#: plinth/modules/backups/views.py:129
 msgid "Archive deleted."
 msgstr ""
 
-#: plinth/modules/backups/views.py:174
+#: plinth/modules/backups/views.py:180
 msgid "Restored files from backup."
 msgstr ""
 
-#: plinth/modules/backups/views.py:198
+#: plinth/modules/backups/views.py:208
 msgid "No backup file found."
 msgstr ""
 
-#: plinth/modules/backups/views.py:206
+#: plinth/modules/backups/views.py:216
 msgid "Restore from uploaded file"
 msgstr ""
 
-#: plinth/modules/backups/views.py:260
-msgid "Added new repository."
-msgstr ""
-
-#: plinth/modules/backups/views.py:265
+#: plinth/modules/backups/views.py:272
 msgid "Create remote backup repository"
 msgstr ""
 
-#: plinth/modules/backups/views.py:296
+#: plinth/modules/backups/views.py:292
+msgid "Added new remote SSH repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:315
+msgid "Verify SSH hostkey"
+msgstr ""
+
+#: plinth/modules/backups/views.py:349
+msgid "SSH host already verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:358
+msgid "SSH host verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:382
+msgid "SSH host public key could not be verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:384
+msgid "Authentication to remote server failed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:386
+msgid "Error establishing connection to server: {}"
+msgstr ""
+
+#: plinth/modules/backups/views.py:389
+msgid "Repository path is neither empty nor is an existing backups repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:396
+msgid "Repository removed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:471
 msgid "Repository removed. The remote backup itself was not deleted."
 msgstr ""
 
-#: plinth/modules/backups/views.py:304
+#: plinth/modules/backups/views.py:481
 msgid "Unmounting failed!"
 msgstr ""
 
-#: plinth/modules/backups/views.py:313 plinth/modules/backups/views.py:317
+#: plinth/modules/backups/views.py:496 plinth/modules/backups/views.py:500
 msgid "Mounting failed"
 msgstr ""
 
@@ -2035,7 +2109,13 @@ msgid ""
 "the initial setup is currently not supported."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:40
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:36
+msgid ""
+"New users can be registered from any client if public registration is "
+"enabled."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:45
 #, python-format
 msgid ""
 "\n"
@@ -5065,7 +5145,7 @@ msgstr ""
 msgid "Log in"
 msgstr ""
 
-#: plinth/templates/clients.html:28
+#: plinth/templates/clients.html:29
 msgid "Client Apps"
 msgstr ""
 
diff --git a/plinth/locale/el/LC_MESSAGES/django.po b/plinth/locale/el/LC_MESSAGES/django.po
index 934f15b54..15d41baf2 100644
--- a/plinth/locale/el/LC_MESSAGES/django.po
+++ b/plinth/locale/el/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-06-24 19:48-0400\n"
+"POT-Creation-Date: 2019-07-08 17:31-0400\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: Automatically generated\n"
 "Language-Team: none\n"
@@ -116,127 +116,153 @@ msgid ""
 "network."
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:38 plinth/modules/backups/views.py:50
+#: plinth/modules/backups/__init__.py:41 plinth/modules/backups/views.py:54
 msgid "Backups"
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:41
+#: plinth/modules/backups/__init__.py:44
 msgid "Backups allows creating and managing backup archives."
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:49
+#: plinth/modules/backups/__init__.py:52
 #, python-brace-format
 msgid "{box_name} storage"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:38
+#: plinth/modules/backups/forms.py:47
 #, python-brace-format
 msgid "{app} (No data to backup)"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Included apps"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Apps to include in the backup"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:72
+#: plinth/modules/backups/forms.py:83
 msgid "Select the apps you want to restore"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:85
+#: plinth/modules/backups/forms.py:96
 msgid "Upload File"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:88
+#: plinth/modules/backups/forms.py:98
 msgid "Backup files have to be in .tar.gz format"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:89
+#: plinth/modules/backups/forms.py:99
 msgid "Select the backup file you want to upload"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:94
+#: plinth/modules/backups/forms.py:105
+msgid "Repository path format incorrect."
+msgstr ""
+
+#: plinth/modules/backups/forms.py:112
+#, python-brace-format
+msgid "Invalid username: {username}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:122
+#, python-brace-format
+msgid "Invalid hostname: {hostname}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:126
+#, python-brace-format
+msgid "Invalid directory path: {dir_path}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:132
 msgid "SSH Repository Path"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:95
+#: plinth/modules/backups/forms.py:133
 msgid ""
 "Path of a new or existing repository. Example: <i>user@host:~/path/to/repo/</"
 "i>"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:98
+#: plinth/modules/backups/forms.py:137
 msgid "SSH server password"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:99
+#: plinth/modules/backups/forms.py:138
 msgid ""
 "Password of the SSH Server.<br />SSH key-based authentication is not yet "
 "possible."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:104
+#: plinth/modules/backups/forms.py:142
 msgid "Encryption"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:106
+#: plinth/modules/backups/forms.py:143
 msgid ""
 "\"Key in Repository\" means that a password-protected key is stored with the "
 "backup."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:111 plinth/modules/networks/forms.py:304
+#: plinth/modules/backups/forms.py:147 plinth/modules/networks/forms.py:304
 msgid "Passphrase"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:112
+#: plinth/modules/backups/forms.py:148
 msgid "Passphrase; Only needed when using encryption."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:117
+#: plinth/modules/backups/forms.py:151
 msgid "Confirm Passphrase"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:118
+#: plinth/modules/backups/forms.py:151
 msgid "Repeat the passphrase."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:139
+#: plinth/modules/backups/forms.py:162
 msgid "The entered encryption passphrases do not match"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:151
-#, python-format
-msgid "Accessing the remote repository failed. Details: %(err)s"
+#: plinth/modules/backups/forms.py:166
+msgid "Passphrase is needed for encryption."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:45
+#: plinth/modules/backups/forms.py:183
+msgid "Remote backup repository already exists."
+msgstr ""
+
+#: plinth/modules/backups/forms.py:189
+msgid "Select verified SSH public key"
+msgstr ""
+
+#: plinth/modules/backups/repository.py:46
 msgid ""
 "Connection refused - make sure you provided correct credentials and the "
 "server is running."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:51
+#: plinth/modules/backups/repository.py:53
 msgid "Connection refused"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:58
+#: plinth/modules/backups/repository.py:62
 msgid "Repository not found"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:65
+#: plinth/modules/backups/repository.py:70
 msgid "Incorrect encryption passphrase"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:70
+#: plinth/modules/backups/repository.py:76
 msgid "SSH access denied"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups.html:47
-msgid "Existing backups"
+msgid "Existing backup locations"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups.html:57
@@ -289,6 +315,7 @@ msgstr ""
 #: plinth/modules/backups/templates/backups_repository_add.html:45
 #: plinth/modules/backups/templates/backups_repository_remove.html:49
 #: plinth/modules/backups/templates/backups_restore.html:52
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:61
 #: plinth/modules/ikiwiki/templates/ikiwiki_delete.html:47
 #: plinth/modules/monkeysphere/templates/monkeysphere.html:67
 #: plinth/modules/networks/templates/connections_delete.html:41
@@ -311,7 +338,7 @@ msgid ""
 msgstr ""
 
 #: plinth/modules/backups/templates/backups_repository_remove.html:46
-#: plinth/modules/backups/views.py:286
+#: plinth/modules/backups/views.py:461
 msgid "Remove Repository"
 msgstr ""
 
@@ -320,7 +347,7 @@ msgid "Restore data from"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups_restore.html:43
-#: plinth/modules/backups/views.py:186
+#: plinth/modules/backups/views.py:192
 msgid "Restore"
 msgstr ""
 
@@ -356,55 +383,102 @@ msgstr ""
 msgid "Upload file"
 msgstr ""
 
-#: plinth/modules/backups/views.py:53
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:40
+msgid "How to verify?"
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:45
+msgid ""
+"Run the following command on the SSH host machine. The output should match "
+"one of the provided options. You can also use dsa, ecdsa, ed25519 etc. "
+"instead of rsa, by choosing the corresponding file."
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:59
+msgid "Verify Host"
+msgstr ""
+
+#: plinth/modules/backups/views.py:57
 msgid "Upload"
 msgstr ""
 
-#: plinth/modules/backups/views.py:56 plinth/modules/ikiwiki/views.py:41
+#: plinth/modules/backups/views.py:60 plinth/modules/ikiwiki/views.py:41
 msgid "Create"
 msgstr ""
 
-#: plinth/modules/backups/views.py:84
+#: plinth/modules/backups/views.py:88
 msgid "Archive created."
 msgstr ""
 
-#: plinth/modules/backups/views.py:111
+#: plinth/modules/backups/views.py:117
 msgid "Delete Archive"
 msgstr ""
 
-#: plinth/modules/backups/views.py:123
+#: plinth/modules/backups/views.py:129
 msgid "Archive deleted."
 msgstr ""
 
-#: plinth/modules/backups/views.py:174
+#: plinth/modules/backups/views.py:180
 msgid "Restored files from backup."
 msgstr ""
 
-#: plinth/modules/backups/views.py:198
+#: plinth/modules/backups/views.py:208
 msgid "No backup file found."
 msgstr ""
 
-#: plinth/modules/backups/views.py:206
+#: plinth/modules/backups/views.py:216
 msgid "Restore from uploaded file"
 msgstr ""
 
-#: plinth/modules/backups/views.py:260
-msgid "Added new repository."
-msgstr ""
-
-#: plinth/modules/backups/views.py:265
+#: plinth/modules/backups/views.py:272
 msgid "Create remote backup repository"
 msgstr ""
 
-#: plinth/modules/backups/views.py:296
+#: plinth/modules/backups/views.py:292
+msgid "Added new remote SSH repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:315
+msgid "Verify SSH hostkey"
+msgstr ""
+
+#: plinth/modules/backups/views.py:349
+msgid "SSH host already verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:358
+msgid "SSH host verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:382
+msgid "SSH host public key could not be verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:384
+msgid "Authentication to remote server failed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:386
+msgid "Error establishing connection to server: {}"
+msgstr ""
+
+#: plinth/modules/backups/views.py:389
+msgid "Repository path is neither empty nor is an existing backups repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:396
+msgid "Repository removed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:471
 msgid "Repository removed. The remote backup itself was not deleted."
 msgstr ""
 
-#: plinth/modules/backups/views.py:304
+#: plinth/modules/backups/views.py:481
 msgid "Unmounting failed!"
 msgstr ""
 
-#: plinth/modules/backups/views.py:313 plinth/modules/backups/views.py:317
+#: plinth/modules/backups/views.py:496 plinth/modules/backups/views.py:500
 msgid "Mounting failed"
 msgstr ""
 
@@ -2034,7 +2108,13 @@ msgid ""
 "the initial setup is currently not supported."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:40
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:36
+msgid ""
+"New users can be registered from any client if public registration is "
+"enabled."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:45
 #, python-format
 msgid ""
 "\n"
@@ -5064,7 +5144,7 @@ msgstr ""
 msgid "Log in"
 msgstr ""
 
-#: plinth/templates/clients.html:28
+#: plinth/templates/clients.html:29
 msgid "Client Apps"
 msgstr ""
 
diff --git a/plinth/locale/es/LC_MESSAGES/django.po b/plinth/locale/es/LC_MESSAGES/django.po
index cb4d94bd5..3bdf36028 100644
--- a/plinth/locale/es/LC_MESSAGES/django.po
+++ b/plinth/locale/es/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-06-24 19:48-0400\n"
+"POT-Creation-Date: 2019-07-08 17:31-0400\n"
 "PO-Revision-Date: 2019-07-02 17:13+0000\n"
 "Last-Translator: Luis A. Arizmendi <luis.arizmendi@mailfence.com>\n"
 "Language-Team: Spanish <https://hosted.weblate.org/projects/freedombox/"
@@ -127,56 +127,79 @@ msgstr ""
 "desactivado para incrementar la seguridad, especialmente cuando se conecta a "
 "redes locales inseguras o de poca confianza."
 
-#: plinth/modules/backups/__init__.py:38 plinth/modules/backups/views.py:50
+#: plinth/modules/backups/__init__.py:41 plinth/modules/backups/views.py:54
 msgid "Backups"
 msgstr "Copias de seguridad"
 
-#: plinth/modules/backups/__init__.py:41
+#: plinth/modules/backups/__init__.py:44
 msgid "Backups allows creating and managing backup archives."
 msgstr ""
 "Copias de seguridad le permite crear y gestionar archivos de copia de "
 "seguridad."
 
-#: plinth/modules/backups/__init__.py:49
+#: plinth/modules/backups/__init__.py:52
 #, python-brace-format
 msgid "{box_name} storage"
 msgstr "Almacenamiento de {box_name}"
 
-#: plinth/modules/backups/forms.py:38
+#: plinth/modules/backups/forms.py:47
 #, python-brace-format
 msgid "{app} (No data to backup)"
 msgstr "{app}1 (Sin datos para respaldar)"
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Included apps"
 msgstr "Aplicaciones incluidas"
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Apps to include in the backup"
 msgstr "Aplicaciones a incluir en la copia de seguridad"
 
-#: plinth/modules/backups/forms.py:72
+#: plinth/modules/backups/forms.py:83
 msgid "Select the apps you want to restore"
 msgstr "Seleccione las aplicaciones que desea restaurar"
 
-#: plinth/modules/backups/forms.py:85
+#: plinth/modules/backups/forms.py:96
 msgid "Upload File"
 msgstr "Subir Archivo"
 
-#: plinth/modules/backups/forms.py:88
+#: plinth/modules/backups/forms.py:98
 msgid "Backup files have to be in .tar.gz format"
 msgstr ""
 "Los archivos de la copia de seguridad deben de estar en formato .tar.gz"
 
-#: plinth/modules/backups/forms.py:89
+#: plinth/modules/backups/forms.py:99
 msgid "Select the backup file you want to upload"
 msgstr "Seleccione la copia de seguridad que desea subir"
 
-#: plinth/modules/backups/forms.py:94
+#: plinth/modules/backups/forms.py:105
+#, fuzzy
+#| msgid "Repository not found"
+msgid "Repository path format incorrect."
+msgstr "Repositorio no encontrado"
+
+#: plinth/modules/backups/forms.py:112
+#, fuzzy, python-brace-format
+#| msgid "Invalid server name"
+msgid "Invalid username: {username}"
+msgstr "Nombre de servidor no válido"
+
+#: plinth/modules/backups/forms.py:122
+#, fuzzy, python-brace-format
+#| msgid "Invalid hostname"
+msgid "Invalid hostname: {hostname}"
+msgstr "Nombre de anfitrión no válido"
+
+#: plinth/modules/backups/forms.py:126
+#, python-brace-format
+msgid "Invalid directory path: {dir_path}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:132
 msgid "SSH Repository Path"
 msgstr "Ruta al repositorio SSH"
 
-#: plinth/modules/backups/forms.py:95
+#: plinth/modules/backups/forms.py:133
 msgid ""
 "Path of a new or existing repository. Example: <i>user@host:~/path/to/repo/</"
 "i>"
@@ -184,11 +207,11 @@ msgstr ""
 "Ruta al repositorio nuevo o existente. Ejemplo: <i>usuario@host:~/ruta/al/"
 "repo/</i>"
 
-#: plinth/modules/backups/forms.py:98
+#: plinth/modules/backups/forms.py:137
 msgid "SSH server password"
 msgstr "Contraseña del servidor SSH"
 
-#: plinth/modules/backups/forms.py:99
+#: plinth/modules/backups/forms.py:138
 msgid ""
 "Password of the SSH Server.<br />SSH key-based authentication is not yet "
 "possible."
@@ -196,11 +219,11 @@ msgstr ""
 "Contraseña del servidor SSH.<br />La autenticación basada en clave SSH aún "
 "no es posible."
 
-#: plinth/modules/backups/forms.py:104
+#: plinth/modules/backups/forms.py:142
 msgid "Encryption"
 msgstr "Cifrado"
 
-#: plinth/modules/backups/forms.py:106
+#: plinth/modules/backups/forms.py:143
 msgid ""
 "\"Key in Repository\" means that a password-protected key is stored with the "
 "backup."
@@ -208,32 +231,43 @@ msgstr ""
 "\"Clave en el repositorio\" significa que una clave protegida por contraseña "
 "está almacenada con la copia de seguridad."
 
-#: plinth/modules/backups/forms.py:111 plinth/modules/networks/forms.py:304
+#: plinth/modules/backups/forms.py:147 plinth/modules/networks/forms.py:304
 msgid "Passphrase"
 msgstr "Clave de acceso"
 
-#: plinth/modules/backups/forms.py:112
+#: plinth/modules/backups/forms.py:148
 msgid "Passphrase; Only needed when using encryption."
 msgstr "Contraseña; solo necesaria cuando se use cifrado."
 
-#: plinth/modules/backups/forms.py:117
+#: plinth/modules/backups/forms.py:151
 msgid "Confirm Passphrase"
 msgstr "Confirmar contraseña"
 
-#: plinth/modules/backups/forms.py:118
+#: plinth/modules/backups/forms.py:151
 msgid "Repeat the passphrase."
 msgstr "Repetir la contraseña."
 
-#: plinth/modules/backups/forms.py:139
+#: plinth/modules/backups/forms.py:162
 msgid "The entered encryption passphrases do not match"
 msgstr "Las contraseñas de cifrado introducidas no coinciden"
 
-#: plinth/modules/backups/forms.py:151
-#, python-format
-msgid "Accessing the remote repository failed. Details: %(err)s"
-msgstr "No se pudo acceder al repositorio remoto. Detalles: %(err)s"
+#: plinth/modules/backups/forms.py:166
+#, fuzzy
+#| msgid "Passphrase; Only needed when using encryption."
+msgid "Passphrase is needed for encryption."
+msgstr "Contraseña; solo necesaria cuando se use cifrado."
 
-#: plinth/modules/backups/repository.py:45
+#: plinth/modules/backups/forms.py:183
+#, fuzzy
+#| msgid "Create remote backup repository"
+msgid "Remote backup repository already exists."
+msgstr "Crear repositorio de copias de seguridad remotas"
+
+#: plinth/modules/backups/forms.py:189
+msgid "Select verified SSH public key"
+msgstr ""
+
+#: plinth/modules/backups/repository.py:46
 msgid ""
 "Connection refused - make sure you provided correct credentials and the "
 "server is running."
@@ -241,24 +275,26 @@ msgstr ""
 "Conexión rechazada - asegúrese de que proporciona las credenciales correctas "
 "y de que el servidor está funcionando."
 
-#: plinth/modules/backups/repository.py:51
+#: plinth/modules/backups/repository.py:53
 msgid "Connection refused"
 msgstr "Conexión rechazada"
 
-#: plinth/modules/backups/repository.py:58
+#: plinth/modules/backups/repository.py:62
 msgid "Repository not found"
 msgstr "Repositorio no encontrado"
 
-#: plinth/modules/backups/repository.py:65
+#: plinth/modules/backups/repository.py:70
 msgid "Incorrect encryption passphrase"
 msgstr "Contraseña de cifrado incorrecta"
 
-#: plinth/modules/backups/repository.py:70
+#: plinth/modules/backups/repository.py:76
 msgid "SSH access denied"
 msgstr "Denegado acceso SSH"
 
 #: plinth/modules/backups/templates/backups.html:47
-msgid "Existing backups"
+#, fuzzy
+#| msgid "Existing backups"
+msgid "Existing backup locations"
 msgstr "Copias de seguridad existentes"
 
 #: plinth/modules/backups/templates/backups.html:57
@@ -314,6 +350,7 @@ msgstr "Crear repositorio"
 #: plinth/modules/backups/templates/backups_repository_add.html:45
 #: plinth/modules/backups/templates/backups_repository_remove.html:49
 #: plinth/modules/backups/templates/backups_restore.html:52
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:61
 #: plinth/modules/ikiwiki/templates/ikiwiki_delete.html:47
 #: plinth/modules/monkeysphere/templates/monkeysphere.html:67
 #: plinth/modules/networks/templates/connections_delete.html:41
@@ -342,7 +379,7 @@ msgstr ""
 "    "
 
 #: plinth/modules/backups/templates/backups_repository_remove.html:46
-#: plinth/modules/backups/views.py:286
+#: plinth/modules/backups/views.py:461
 msgid "Remove Repository"
 msgstr "Eliminar repositorio"
 
@@ -351,7 +388,7 @@ msgid "Restore data from"
 msgstr "Restaurar datos de"
 
 #: plinth/modules/backups/templates/backups_restore.html:43
-#: plinth/modules/backups/views.py:186
+#: plinth/modules/backups/views.py:192
 msgid "Restore"
 msgstr "Restaurar"
 
@@ -396,55 +433,108 @@ msgstr ""
 msgid "Upload file"
 msgstr "Subir archivo"
 
-#: plinth/modules/backups/views.py:53
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:40
+msgid "How to verify?"
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:45
+msgid ""
+"Run the following command on the SSH host machine. The output should match "
+"one of the provided options. You can also use dsa, ecdsa, ed25519 etc. "
+"instead of rsa, by choosing the corresponding file."
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:59
+msgid "Verify Host"
+msgstr ""
+
+#: plinth/modules/backups/views.py:57
 msgid "Upload"
 msgstr "Subir archivo"
 
-#: plinth/modules/backups/views.py:56 plinth/modules/ikiwiki/views.py:41
+#: plinth/modules/backups/views.py:60 plinth/modules/ikiwiki/views.py:41
 msgid "Create"
 msgstr "Crear"
 
-#: plinth/modules/backups/views.py:84
+#: plinth/modules/backups/views.py:88
 msgid "Archive created."
 msgstr "Archivo creado."
 
-#: plinth/modules/backups/views.py:111
+#: plinth/modules/backups/views.py:117
 msgid "Delete Archive"
 msgstr "Borrar archivo"
 
-#: plinth/modules/backups/views.py:123
+#: plinth/modules/backups/views.py:129
 msgid "Archive deleted."
 msgstr "Archivo borrado."
 
-#: plinth/modules/backups/views.py:174
+#: plinth/modules/backups/views.py:180
 msgid "Restored files from backup."
 msgstr "Archivos restaurados desde la copia de seguridad."
 
-#: plinth/modules/backups/views.py:198
+#: plinth/modules/backups/views.py:208
 msgid "No backup file found."
 msgstr "No se encontraron copias de seguridad."
 
-#: plinth/modules/backups/views.py:206
+#: plinth/modules/backups/views.py:216
 msgid "Restore from uploaded file"
 msgstr "Restaurar desde la copia de seguridad subida"
 
-#: plinth/modules/backups/views.py:260
-msgid "Added new repository."
-msgstr "Añadido nuevo repositorio."
-
-#: plinth/modules/backups/views.py:265
+#: plinth/modules/backups/views.py:272
 msgid "Create remote backup repository"
 msgstr "Crear repositorio de copias de seguridad remotas"
 
-#: plinth/modules/backups/views.py:296
+#: plinth/modules/backups/views.py:292
+#, fuzzy
+#| msgid "Added new repository."
+msgid "Added new remote SSH repository."
+msgstr "Añadido nuevo repositorio."
+
+#: plinth/modules/backups/views.py:315
+msgid "Verify SSH hostkey"
+msgstr ""
+
+#: plinth/modules/backups/views.py:349
+msgid "SSH host already verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:358
+msgid "SSH host verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:382
+msgid "SSH host public key could not be verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:384
+msgid "Authentication to remote server failed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:386
+#, fuzzy
+#| msgid "Error installing application: {error}"
+msgid "Error establishing connection to server: {}"
+msgstr "Error al instalar la aplicación: {error}"
+
+#: plinth/modules/backups/views.py:389
+msgid "Repository path is neither empty nor is an existing backups repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:396
+#, fuzzy
+#| msgid "Repository not found"
+msgid "Repository removed."
+msgstr "Repositorio no encontrado"
+
+#: plinth/modules/backups/views.py:471
 msgid "Repository removed. The remote backup itself was not deleted."
 msgstr "Eliminado repositorio. La copia de seguridad remota no se ha borrado."
 
-#: plinth/modules/backups/views.py:304
+#: plinth/modules/backups/views.py:481
 msgid "Unmounting failed!"
 msgstr "¡No se pudo desmontar!"
 
-#: plinth/modules/backups/views.py:313 plinth/modules/backups/views.py:317
+#: plinth/modules/backups/views.py:496 plinth/modules/backups/views.py:500
 msgid "Mounting failed"
 msgstr "Montaje fallido"
 
@@ -1248,9 +1338,9 @@ msgid ""
 "any <a href=\"{users_url}\"> user with a {box_name} login</a>."
 msgstr ""
 "Para comunicarse puede usar el <a href=\"{jsxc_url}\">cliente web</a> o "
-"cualquier otro <a href='https://xmpp.org/software/clients' target='_blank'>"
-"cliente XMPP</a>. Cuando se activa, ejabberd está disponible para cualquier  "
-"<a href=\"{users_url}\">usuario con  acceso a {box_name}</a>."
+"cualquier otro <a href='https://xmpp.org/software/clients' "
+"target='_blank'>cliente XMPP</a>. Cuando se activa, ejabberd está disponible "
+"para cualquier  <a href=\"{users_url}\">usuario con  acceso a {box_name}</a>."
 
 #: plinth/modules/ejabberd/forms.py:32
 msgid "Enable Message Archive Management"
@@ -2374,7 +2464,13 @@ msgstr ""
 "usuaria/o será parecida a <em>@username:%(domain_name)s</em>. Actualmente no "
 "se puede cambiar el nombre de dominio una vez ha sido configurado."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:40
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:36
+msgid ""
+"New users can be registered from any client if public registration is "
+"enabled."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:45
 #, python-format
 msgid ""
 "\n"
@@ -5841,7 +5937,7 @@ msgstr "Seleccionar idioma"
 msgid "Log in"
 msgstr "Iniciar sesión"
 
-#: plinth/templates/clients.html:28
+#: plinth/templates/clients.html:29
 msgid "Client Apps"
 msgstr "Aplicaciones de cliente"
 
@@ -6057,6 +6153,9 @@ msgstr "Aplicación desactivada"
 msgid "Gujarati"
 msgstr "Gujarati"
 
+#~ msgid "Accessing the remote repository failed. Details: %(err)s"
+#~ msgstr "No se pudo acceder al repositorio remoto. Detalles: %(err)s"
+
 #~ msgid "Tor Anonymity Network"
 #~ msgstr "Red anónima Tor"
 
diff --git a/plinth/locale/fa/LC_MESSAGES/django.po b/plinth/locale/fa/LC_MESSAGES/django.po
index b26263db9..066bcd911 100644
--- a/plinth/locale/fa/LC_MESSAGES/django.po
+++ b/plinth/locale/fa/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-06-24 19:48-0400\n"
+"POT-Creation-Date: 2019-07-08 17:31-0400\n"
 "PO-Revision-Date: 2016-08-12 15:51+0000\n"
 "Last-Translator: Masoud Abkenar <ampbox@gmail.com>\n"
 "Language-Team: Persian <https://hosted.weblate.org/projects/freedombox/"
@@ -132,138 +132,166 @@ msgstr ""
 "غیرفعال کنید تا امنیت را بالا ببرید، به‌ویژه اگر دستگاه‌های دیگر روی شبکهٔ محلی "
 "مورد اعتمادتان نیستند."
 
-#: plinth/modules/backups/__init__.py:38 plinth/modules/backups/views.py:50
+#: plinth/modules/backups/__init__.py:41 plinth/modules/backups/views.py:54
 msgid "Backups"
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:41
+#: plinth/modules/backups/__init__.py:44
 msgid "Backups allows creating and managing backup archives."
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:49
+#: plinth/modules/backups/__init__.py:52
 #, fuzzy, python-brace-format
 #| msgid "{box_name} Manual"
 msgid "{box_name} storage"
 msgstr "کتاب راهنمای {box_name}"
 
-#: plinth/modules/backups/forms.py:38
+#: plinth/modules/backups/forms.py:47
 #, python-brace-format
 msgid "{app} (No data to backup)"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Included apps"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Apps to include in the backup"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:72
+#: plinth/modules/backups/forms.py:83
 #, fuzzy
 #| msgid "The subdomain you want to register"
 msgid "Select the apps you want to restore"
 msgstr "زیردامنه‌ای که می‌خواهید ثبت کنید"
 
-#: plinth/modules/backups/forms.py:85
+#: plinth/modules/backups/forms.py:96
 msgid "Upload File"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:88
+#: plinth/modules/backups/forms.py:98
 msgid "Backup files have to be in .tar.gz format"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:89
+#: plinth/modules/backups/forms.py:99
 msgid "Select the backup file you want to upload"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:94
+#: plinth/modules/backups/forms.py:105
+msgid "Repository path format incorrect."
+msgstr ""
+
+#: plinth/modules/backups/forms.py:112
+#, fuzzy, python-brace-format
+#| msgid "Invalid server name"
+msgid "Invalid username: {username}"
+msgstr "نام کاربری معتبر نیست"
+
+#: plinth/modules/backups/forms.py:122
+#, fuzzy, python-brace-format
+#| msgid "Invalid hostname"
+msgid "Invalid hostname: {hostname}"
+msgstr "نام میزبان معتبر نیست"
+
+#: plinth/modules/backups/forms.py:126
+#, python-brace-format
+msgid "Invalid directory path: {dir_path}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:132
 msgid "SSH Repository Path"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:95
+#: plinth/modules/backups/forms.py:133
 msgid ""
 "Path of a new or existing repository. Example: <i>user@host:~/path/to/repo/</"
 "i>"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:98
+#: plinth/modules/backups/forms.py:137
 #, fuzzy
 #| msgid "Please provide a password"
 msgid "SSH server password"
 msgstr "لطفاً یک رمز وارد کنید"
 
-#: plinth/modules/backups/forms.py:99
+#: plinth/modules/backups/forms.py:138
 msgid ""
 "Password of the SSH Server.<br />SSH key-based authentication is not yet "
 "possible."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:104
+#: plinth/modules/backups/forms.py:142
 #, fuzzy
 #| msgid "Description"
 msgid "Encryption"
 msgstr "شرح"
 
-#: plinth/modules/backups/forms.py:106
+#: plinth/modules/backups/forms.py:143
 msgid ""
 "\"Key in Repository\" means that a password-protected key is stored with the "
 "backup."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:111 plinth/modules/networks/forms.py:304
+#: plinth/modules/backups/forms.py:147 plinth/modules/networks/forms.py:304
 msgid "Passphrase"
 msgstr "رمز"
 
-#: plinth/modules/backups/forms.py:112
+#: plinth/modules/backups/forms.py:148
 msgid "Passphrase; Only needed when using encryption."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:117
+#: plinth/modules/backups/forms.py:151
 #, fuzzy
 #| msgid "Passphrase"
 msgid "Confirm Passphrase"
 msgstr "رمز"
 
-#: plinth/modules/backups/forms.py:118
+#: plinth/modules/backups/forms.py:151
 msgid "Repeat the passphrase."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:139
+#: plinth/modules/backups/forms.py:162
 msgid "The entered encryption passphrases do not match"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:151
-#, python-format
-msgid "Accessing the remote repository failed. Details: %(err)s"
+#: plinth/modules/backups/forms.py:166
+msgid "Passphrase is needed for encryption."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:45
+#: plinth/modules/backups/forms.py:183
+msgid "Remote backup repository already exists."
+msgstr ""
+
+#: plinth/modules/backups/forms.py:189
+msgid "Select verified SSH public key"
+msgstr ""
+
+#: plinth/modules/backups/repository.py:46
 msgid ""
 "Connection refused - make sure you provided correct credentials and the "
 "server is running."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:51
+#: plinth/modules/backups/repository.py:53
 #, fuzzy
 #| msgid "Connection Type"
 msgid "Connection refused"
 msgstr "نوع اتصال"
 
-#: plinth/modules/backups/repository.py:58
+#: plinth/modules/backups/repository.py:62
 msgid "Repository not found"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:65
+#: plinth/modules/backups/repository.py:70
 msgid "Incorrect encryption passphrase"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:70
+#: plinth/modules/backups/repository.py:76
 msgid "SSH access denied"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups.html:47
-msgid "Existing backups"
+msgid "Existing backup locations"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups.html:57
@@ -320,6 +348,7 @@ msgstr ""
 #: plinth/modules/backups/templates/backups_repository_add.html:45
 #: plinth/modules/backups/templates/backups_repository_remove.html:49
 #: plinth/modules/backups/templates/backups_restore.html:52
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:61
 #: plinth/modules/ikiwiki/templates/ikiwiki_delete.html:47
 #: plinth/modules/monkeysphere/templates/monkeysphere.html:67
 #: plinth/modules/networks/templates/connections_delete.html:41
@@ -342,7 +371,7 @@ msgid ""
 msgstr ""
 
 #: plinth/modules/backups/templates/backups_repository_remove.html:46
-#: plinth/modules/backups/views.py:286
+#: plinth/modules/backups/views.py:461
 msgid "Remove Repository"
 msgstr ""
 
@@ -353,7 +382,7 @@ msgid "Restore data from"
 msgstr "پاک‌کردن %(name)s"
 
 #: plinth/modules/backups/templates/backups_restore.html:43
-#: plinth/modules/backups/views.py:186
+#: plinth/modules/backups/views.py:192
 msgid "Restore"
 msgstr ""
 
@@ -389,59 +418,108 @@ msgstr ""
 msgid "Upload file"
 msgstr ""
 
-#: plinth/modules/backups/views.py:53
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:40
+msgid "How to verify?"
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:45
+msgid ""
+"Run the following command on the SSH host machine. The output should match "
+"one of the provided options. You can also use dsa, ecdsa, ed25519 etc. "
+"instead of rsa, by choosing the corresponding file."
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:59
+msgid "Verify Host"
+msgstr ""
+
+#: plinth/modules/backups/views.py:57
 msgid "Upload"
 msgstr ""
 
-#: plinth/modules/backups/views.py:56 plinth/modules/ikiwiki/views.py:41
+#: plinth/modules/backups/views.py:60 plinth/modules/ikiwiki/views.py:41
 msgid "Create"
 msgstr "ساختن"
 
-#: plinth/modules/backups/views.py:84
+#: plinth/modules/backups/views.py:88
 msgid "Archive created."
 msgstr ""
 
-#: plinth/modules/backups/views.py:111
+#: plinth/modules/backups/views.py:117
 #, fuzzy
 #| msgid "Delete"
 msgid "Delete Archive"
 msgstr "پاک‌کردن"
 
-#: plinth/modules/backups/views.py:123
+#: plinth/modules/backups/views.py:129
 #, fuzzy
 #| msgid "{name} deleted."
 msgid "Archive deleted."
 msgstr "{name} پاک شد."
 
-#: plinth/modules/backups/views.py:174
+#: plinth/modules/backups/views.py:180
 msgid "Restored files from backup."
 msgstr ""
 
-#: plinth/modules/backups/views.py:198
+#: plinth/modules/backups/views.py:208
 msgid "No backup file found."
 msgstr ""
 
-#: plinth/modules/backups/views.py:206
+#: plinth/modules/backups/views.py:216
 msgid "Restore from uploaded file"
 msgstr ""
 
-#: plinth/modules/backups/views.py:260
-msgid "Added new repository."
-msgstr ""
-
-#: plinth/modules/backups/views.py:265
+#: plinth/modules/backups/views.py:272
 msgid "Create remote backup repository"
 msgstr ""
 
-#: plinth/modules/backups/views.py:296
+#: plinth/modules/backups/views.py:292
+msgid "Added new remote SSH repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:315
+msgid "Verify SSH hostkey"
+msgstr ""
+
+#: plinth/modules/backups/views.py:349
+msgid "SSH host already verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:358
+msgid "SSH host verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:382
+msgid "SSH host public key could not be verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:384
+msgid "Authentication to remote server failed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:386
+#, fuzzy
+#| msgid "Error installing application: {error}"
+msgid "Error establishing connection to server: {}"
+msgstr "خطا هنگام نصب برنامه: {error}"
+
+#: plinth/modules/backups/views.py:389
+msgid "Repository path is neither empty nor is an existing backups repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:396
+msgid "Repository removed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:471
 msgid "Repository removed. The remote backup itself was not deleted."
 msgstr ""
 
-#: plinth/modules/backups/views.py:304
+#: plinth/modules/backups/views.py:481
 msgid "Unmounting failed!"
 msgstr ""
 
-#: plinth/modules/backups/views.py:313 plinth/modules/backups/views.py:317
+#: plinth/modules/backups/views.py:496 plinth/modules/backups/views.py:500
 msgid "Mounting failed"
 msgstr ""
 
@@ -2291,7 +2369,13 @@ msgid ""
 "the initial setup is currently not supported."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:40
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:36
+msgid ""
+"New users can be registered from any client if public registration is "
+"enabled."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:45
 #, python-format
 msgid ""
 "\n"
@@ -5519,7 +5603,7 @@ msgstr "زبان"
 msgid "Log in"
 msgstr ""
 
-#: plinth/templates/clients.html:28
+#: plinth/templates/clients.html:29
 #, fuzzy
 #| msgid "BitTorrent Web Client (Deluge)"
 msgid "Client Apps"
diff --git a/plinth/locale/fake/LC_MESSAGES/django.po b/plinth/locale/fake/LC_MESSAGES/django.po
index 2710d816c..4c00d8d74 100644
--- a/plinth/locale/fake/LC_MESSAGES/django.po
+++ b/plinth/locale/fake/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Plinth 0.6\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-06-24 19:48-0400\n"
+"POT-Creation-Date: 2019-07-08 17:31-0400\n"
 "PO-Revision-Date: 2016-01-31 22:24+0530\n"
 "Last-Translator: Sunil Mohan Adapa <sunil@medhas.org>\n"
 "Language-Team: Plinth Developers <freedombox-discuss@lists.alioth.debian."
@@ -142,140 +142,170 @@ msgstr ""
 "DISABLED TO IMPROVE SECURITY ESPECIALLY WHEN CONNECTING TO A HOSTILE LOCAL "
 "NETWORK."
 
-#: plinth/modules/backups/__init__.py:38 plinth/modules/backups/views.py:50
+#: plinth/modules/backups/__init__.py:41 plinth/modules/backups/views.py:54
 msgid "Backups"
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:41
+#: plinth/modules/backups/__init__.py:44
 msgid "Backups allows creating and managing backup archives."
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:49
+#: plinth/modules/backups/__init__.py:52
 #, fuzzy, python-brace-format
 #| msgid "{box_name} Manual"
 msgid "{box_name} storage"
 msgstr "{box_name} MANUAL"
 
-#: plinth/modules/backups/forms.py:38
+#: plinth/modules/backups/forms.py:47
 #, python-brace-format
 msgid "{app} (No data to backup)"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Included apps"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Apps to include in the backup"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:72
+#: plinth/modules/backups/forms.py:83
 msgid "Select the apps you want to restore"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:85
+#: plinth/modules/backups/forms.py:96
 msgid "Upload File"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:88
+#: plinth/modules/backups/forms.py:98
 msgid "Backup files have to be in .tar.gz format"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:89
+#: plinth/modules/backups/forms.py:99
 msgid "Select the backup file you want to upload"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:94
+#: plinth/modules/backups/forms.py:105
+#, fuzzy
+#| msgid "packages not found"
+msgid "Repository path format incorrect."
+msgstr "PACKAGES NOT FOUND"
+
+#: plinth/modules/backups/forms.py:112
+#, fuzzy, python-brace-format
+#| msgid "Invalid server name"
+msgid "Invalid username: {username}"
+msgstr "INVALID SERVER NAME"
+
+#: plinth/modules/backups/forms.py:122
+#, fuzzy, python-brace-format
+#| msgid "Invalid hostname"
+msgid "Invalid hostname: {hostname}"
+msgstr "INVALID HOSTNAME"
+
+#: plinth/modules/backups/forms.py:126
+#, python-brace-format
+msgid "Invalid directory path: {dir_path}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:132
 msgid "SSH Repository Path"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:95
+#: plinth/modules/backups/forms.py:133
 msgid ""
 "Path of a new or existing repository. Example: <i>user@host:~/path/to/repo/</"
 "i>"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:98
+#: plinth/modules/backups/forms.py:137
 #, fuzzy
 #| msgid "Save Password"
 msgid "SSH server password"
 msgstr "SAVE PASSWORD"
 
-#: plinth/modules/backups/forms.py:99
+#: plinth/modules/backups/forms.py:138
 msgid ""
 "Password of the SSH Server.<br />SSH key-based authentication is not yet "
 "possible."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:104
+#: plinth/modules/backups/forms.py:142
 #, fuzzy
 #| msgid "Description"
 msgid "Encryption"
 msgstr "DESCRIPTION"
 
-#: plinth/modules/backups/forms.py:106
+#: plinth/modules/backups/forms.py:143
 msgid ""
 "\"Key in Repository\" means that a password-protected key is stored with the "
 "backup."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:111 plinth/modules/networks/forms.py:304
+#: plinth/modules/backups/forms.py:147 plinth/modules/networks/forms.py:304
 msgid "Passphrase"
 msgstr "PASSPHRASE"
 
-#: plinth/modules/backups/forms.py:112
+#: plinth/modules/backups/forms.py:148
 msgid "Passphrase; Only needed when using encryption."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:117
+#: plinth/modules/backups/forms.py:151
 #, fuzzy
 #| msgid "Passphrase"
 msgid "Confirm Passphrase"
 msgstr "PASSPHRASE"
 
-#: plinth/modules/backups/forms.py:118
+#: plinth/modules/backups/forms.py:151
 msgid "Repeat the passphrase."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:139
+#: plinth/modules/backups/forms.py:162
 msgid "The entered encryption passphrases do not match"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:151
-#, python-format
-msgid "Accessing the remote repository failed. Details: %(err)s"
+#: plinth/modules/backups/forms.py:166
+msgid "Passphrase is needed for encryption."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:45
+#: plinth/modules/backups/forms.py:183
+msgid "Remote backup repository already exists."
+msgstr ""
+
+#: plinth/modules/backups/forms.py:189
+msgid "Select verified SSH public key"
+msgstr ""
+
+#: plinth/modules/backups/repository.py:46
 msgid ""
 "Connection refused - make sure you provided correct credentials and the "
 "server is running."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:51
+#: plinth/modules/backups/repository.py:53
 #, fuzzy
 #| msgid "Connection Type"
 msgid "Connection refused"
 msgstr "CONNECTION TYPE"
 
-#: plinth/modules/backups/repository.py:58
+#: plinth/modules/backups/repository.py:62
 #, fuzzy
 #| msgid "packages not found"
 msgid "Repository not found"
 msgstr "PACKAGES NOT FOUND"
 
-#: plinth/modules/backups/repository.py:65
+#: plinth/modules/backups/repository.py:70
 msgid "Incorrect encryption passphrase"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:70
+#: plinth/modules/backups/repository.py:76
 msgid "SSH access denied"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups.html:47
 #, fuzzy
 #| msgid "Existing custom services"
-msgid "Existing backups"
+msgid "Existing backup locations"
 msgstr "EXISTING CUSTOM SERVICES"
 
 #: plinth/modules/backups/templates/backups.html:57
@@ -339,6 +369,7 @@ msgstr "CREATE USER"
 #: plinth/modules/backups/templates/backups_repository_add.html:45
 #: plinth/modules/backups/templates/backups_repository_remove.html:49
 #: plinth/modules/backups/templates/backups_restore.html:52
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:61
 #: plinth/modules/ikiwiki/templates/ikiwiki_delete.html:47
 #: plinth/modules/monkeysphere/templates/monkeysphere.html:67
 #: plinth/modules/networks/templates/connections_delete.html:41
@@ -361,7 +392,7 @@ msgid ""
 msgstr ""
 
 #: plinth/modules/backups/templates/backups_repository_remove.html:46
-#: plinth/modules/backups/views.py:286
+#: plinth/modules/backups/views.py:461
 msgid "Remove Repository"
 msgstr ""
 
@@ -372,7 +403,7 @@ msgid "Restore data from"
 msgstr "DELETE %(name)s"
 
 #: plinth/modules/backups/templates/backups_restore.html:43
-#: plinth/modules/backups/views.py:186
+#: plinth/modules/backups/views.py:192
 #, fuzzy
 #| msgid "reStore"
 msgid "Restore"
@@ -414,61 +445,114 @@ msgstr ""
 msgid "Upload file"
 msgstr "DOWNLOAD MY PROFILE"
 
-#: plinth/modules/backups/views.py:53
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:40
+msgid "How to verify?"
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:45
+msgid ""
+"Run the following command on the SSH host machine. The output should match "
+"one of the provided options. You can also use dsa, ecdsa, ed25519 etc. "
+"instead of rsa, by choosing the corresponding file."
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:59
+msgid "Verify Host"
+msgstr ""
+
+#: plinth/modules/backups/views.py:57
 #, fuzzy
 #| msgid "Download my profile"
 msgid "Upload"
 msgstr "DOWNLOAD MY PROFILE"
 
-#: plinth/modules/backups/views.py:56 plinth/modules/ikiwiki/views.py:41
+#: plinth/modules/backups/views.py:60 plinth/modules/ikiwiki/views.py:41
 msgid "Create"
 msgstr "CREATE"
 
-#: plinth/modules/backups/views.py:84
+#: plinth/modules/backups/views.py:88
 msgid "Archive created."
 msgstr ""
 
-#: plinth/modules/backups/views.py:111
+#: plinth/modules/backups/views.py:117
 #, fuzzy
 #| msgid "Delete"
 msgid "Delete Archive"
 msgstr "DELETE"
 
-#: plinth/modules/backups/views.py:123
+#: plinth/modules/backups/views.py:129
 #, fuzzy
 #| msgid "{name} deleted."
 msgid "Archive deleted."
 msgstr "{name} DELETED."
 
-#: plinth/modules/backups/views.py:174
+#: plinth/modules/backups/views.py:180
 msgid "Restored files from backup."
 msgstr ""
 
-#: plinth/modules/backups/views.py:198
+#: plinth/modules/backups/views.py:208
 msgid "No backup file found."
 msgstr ""
 
-#: plinth/modules/backups/views.py:206
+#: plinth/modules/backups/views.py:216
 msgid "Restore from uploaded file"
 msgstr ""
 
-#: plinth/modules/backups/views.py:260
-msgid "Added new repository."
-msgstr ""
-
-#: plinth/modules/backups/views.py:265
+#: plinth/modules/backups/views.py:272
 msgid "Create remote backup repository"
 msgstr ""
 
-#: plinth/modules/backups/views.py:296
+#: plinth/modules/backups/views.py:292
+#, fuzzy
+#| msgid "Create User"
+msgid "Added new remote SSH repository."
+msgstr "CREATE USER"
+
+#: plinth/modules/backups/views.py:315
+msgid "Verify SSH hostkey"
+msgstr ""
+
+#: plinth/modules/backups/views.py:349
+msgid "SSH host already verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:358
+msgid "SSH host verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:382
+msgid "SSH host public key could not be verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:384
+msgid "Authentication to remote server failed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:386
+#, fuzzy
+#| msgid "Error installing packages: {string} {details}"
+msgid "Error establishing connection to server: {}"
+msgstr "ERROR INSTALLING PACKAGES: {string} {details}"
+
+#: plinth/modules/backups/views.py:389
+msgid "Repository path is neither empty nor is an existing backups repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:396
+#, fuzzy
+#| msgid "packages not found"
+msgid "Repository removed."
+msgstr "PACKAGES NOT FOUND"
+
+#: plinth/modules/backups/views.py:471
 msgid "Repository removed. The remote backup itself was not deleted."
 msgstr ""
 
-#: plinth/modules/backups/views.py:304
+#: plinth/modules/backups/views.py:481
 msgid "Unmounting failed!"
 msgstr ""
 
-#: plinth/modules/backups/views.py:313 plinth/modules/backups/views.py:317
+#: plinth/modules/backups/views.py:496 plinth/modules/backups/views.py:500
 msgid "Mounting failed"
 msgstr ""
 
@@ -2421,7 +2505,13 @@ msgstr ""
 "LIKE <i>USERNAME@%(domainname)s</i>. YOU CAN SETUP YOUR DOMAIN ON THE SYSTEM "
 "<a href=\"%(index_url)s\">CONFIGURE</a> PAGE."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:40
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:36
+msgid ""
+"New users can be registered from any client if public registration is "
+"enabled."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:45
 #, python-format
 msgid ""
 "\n"
@@ -5997,7 +6087,7 @@ msgstr "LANGUAGE"
 msgid "Log in"
 msgstr "LOG IN"
 
-#: plinth/templates/clients.html:28
+#: plinth/templates/clients.html:29
 #, fuzzy
 #| msgid "Quassel IRC Client"
 msgid "Client Apps"
diff --git a/plinth/locale/fr/LC_MESSAGES/django.po b/plinth/locale/fr/LC_MESSAGES/django.po
index d65fb9f09..19b3e2ba7 100644
--- a/plinth/locale/fr/LC_MESSAGES/django.po
+++ b/plinth/locale/fr/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: FreedomBox UI\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-06-24 19:48-0400\n"
+"POT-Creation-Date: 2019-07-08 17:31-0400\n"
 "PO-Revision-Date: 2019-03-13 15:03+0000\n"
 "Last-Translator: Vincent Ladeuil <v.ladeuil+freedombox@free.fr>\n"
 "Language-Team: French <https://hosted.weblate.org/projects/freedombox/plinth/"
@@ -127,53 +127,76 @@ msgstr ""
 "réseaux internes. Il peut être désactiver pour améliorer la sécurité "
 "particulièrement lors d'une connexion à un réseau local hostile."
 
-#: plinth/modules/backups/__init__.py:38 plinth/modules/backups/views.py:50
+#: plinth/modules/backups/__init__.py:41 plinth/modules/backups/views.py:54
 msgid "Backups"
 msgstr "Sauvegardes"
 
-#: plinth/modules/backups/__init__.py:41
+#: plinth/modules/backups/__init__.py:44
 msgid "Backups allows creating and managing backup archives."
 msgstr "Sauvegardes permet de créer et de gérer des archives de sauvegarde."
 
-#: plinth/modules/backups/__init__.py:49
+#: plinth/modules/backups/__init__.py:52
 #, python-brace-format
 msgid "{box_name} storage"
 msgstr "Stockage {box_name}"
 
-#: plinth/modules/backups/forms.py:38
+#: plinth/modules/backups/forms.py:47
 #, python-brace-format
 msgid "{app} (No data to backup)"
 msgstr "{app} (pas de données à sauvegarder)"
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Included apps"
 msgstr "Applications incluses"
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Apps to include in the backup"
 msgstr "Applications à inclure dans la sauvegarde"
 
-#: plinth/modules/backups/forms.py:72
+#: plinth/modules/backups/forms.py:83
 msgid "Select the apps you want to restore"
 msgstr "Sélectionnez les applications que vous souhaitez restaurer."
 
-#: plinth/modules/backups/forms.py:85
+#: plinth/modules/backups/forms.py:96
 msgid "Upload File"
 msgstr "Téléverser un fichier"
 
-#: plinth/modules/backups/forms.py:88
+#: plinth/modules/backups/forms.py:98
 msgid "Backup files have to be in .tar.gz format"
 msgstr "Les fichiers de sauvegarde doivent être au format .tar.gz"
 
-#: plinth/modules/backups/forms.py:89
+#: plinth/modules/backups/forms.py:99
 msgid "Select the backup file you want to upload"
 msgstr "Selectionner le fichier de sauvegarde que vous voulez charger"
 
-#: plinth/modules/backups/forms.py:94
+#: plinth/modules/backups/forms.py:105
+#, fuzzy
+#| msgid "Repository not found"
+msgid "Repository path format incorrect."
+msgstr "Dépôt introuvable"
+
+#: plinth/modules/backups/forms.py:112
+#, fuzzy, python-brace-format
+#| msgid "Invalid server name"
+msgid "Invalid username: {username}"
+msgstr "Nom de serveur invalide"
+
+#: plinth/modules/backups/forms.py:122
+#, fuzzy, python-brace-format
+#| msgid "Invalid hostname"
+msgid "Invalid hostname: {hostname}"
+msgstr "Nom de machine invalide"
+
+#: plinth/modules/backups/forms.py:126
+#, python-brace-format
+msgid "Invalid directory path: {dir_path}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:132
 msgid "SSH Repository Path"
 msgstr "Chemin du dépôt SSH"
 
-#: plinth/modules/backups/forms.py:95
+#: plinth/modules/backups/forms.py:133
 msgid ""
 "Path of a new or existing repository. Example: <i>user@host:~/path/to/repo/</"
 "i>"
@@ -181,11 +204,11 @@ msgstr ""
 "Chemin d'un dépôt nouveau ou existant. Exemple: <i>utilisateur@hôte:~/chemin/"
 "vers/dépôt/</i>"
 
-#: plinth/modules/backups/forms.py:98
+#: plinth/modules/backups/forms.py:137
 msgid "SSH server password"
 msgstr "Mot de passe du serveur SSH"
 
-#: plinth/modules/backups/forms.py:99
+#: plinth/modules/backups/forms.py:138
 msgid ""
 "Password of the SSH Server.<br />SSH key-based authentication is not yet "
 "possible."
@@ -193,11 +216,11 @@ msgstr ""
 "Mot de passe du serveur SSH.<br/>L'authentification par clé SSH n'est pas "
 "encore possible."
 
-#: plinth/modules/backups/forms.py:104
+#: plinth/modules/backups/forms.py:142
 msgid "Encryption"
 msgstr "Chiffrement"
 
-#: plinth/modules/backups/forms.py:106
+#: plinth/modules/backups/forms.py:143
 msgid ""
 "\"Key in Repository\" means that a password-protected key is stored with the "
 "backup."
@@ -205,33 +228,45 @@ msgstr ""
 "\"Clé dans le dépôt\" signifie qu'une clé protégée par mot de passe est "
 "stockée avec la sauvegarde."
 
-#: plinth/modules/backups/forms.py:111 plinth/modules/networks/forms.py:304
+#: plinth/modules/backups/forms.py:147 plinth/modules/networks/forms.py:304
 msgid "Passphrase"
 msgstr "Phrase secrète"
 
-#: plinth/modules/backups/forms.py:112
+#: plinth/modules/backups/forms.py:148
 msgid "Passphrase; Only needed when using encryption."
 msgstr ""
 "Phrase secrète ; nécessaire uniquement lors de l'utilisation du chiffrement."
 
-#: plinth/modules/backups/forms.py:117
+#: plinth/modules/backups/forms.py:151
 msgid "Confirm Passphrase"
 msgstr "Confirmez la phrase secrète"
 
-#: plinth/modules/backups/forms.py:118
+#: plinth/modules/backups/forms.py:151
 msgid "Repeat the passphrase."
 msgstr "Répétez la phrase secrète."
 
-#: plinth/modules/backups/forms.py:139
+#: plinth/modules/backups/forms.py:162
 msgid "The entered encryption passphrases do not match"
 msgstr "Les phrases secrètes de chiffrement entrées ne correspondent pas"
 
-#: plinth/modules/backups/forms.py:151
-#, python-format
-msgid "Accessing the remote repository failed. Details: %(err)s"
-msgstr "L'accès au dépôt distant a échoué. Détails : %(err)s"
+#: plinth/modules/backups/forms.py:166
+#, fuzzy
+#| msgid "Passphrase; Only needed when using encryption."
+msgid "Passphrase is needed for encryption."
+msgstr ""
+"Phrase secrète ; nécessaire uniquement lors de l'utilisation du chiffrement."
 
-#: plinth/modules/backups/repository.py:45
+#: plinth/modules/backups/forms.py:183
+#, fuzzy
+#| msgid "Create remote backup repository"
+msgid "Remote backup repository already exists."
+msgstr "Créer un dépôt de sauvegarde distant"
+
+#: plinth/modules/backups/forms.py:189
+msgid "Select verified SSH public key"
+msgstr ""
+
+#: plinth/modules/backups/repository.py:46
 msgid ""
 "Connection refused - make sure you provided correct credentials and the "
 "server is running."
@@ -239,24 +274,26 @@ msgstr ""
 "Connexion refusée - assurez-vous que vous avez fourni les informations "
 "d'identification correctes et que le serveur est en cours d'exécution."
 
-#: plinth/modules/backups/repository.py:51
+#: plinth/modules/backups/repository.py:53
 msgid "Connection refused"
 msgstr "Connexion refusée"
 
-#: plinth/modules/backups/repository.py:58
+#: plinth/modules/backups/repository.py:62
 msgid "Repository not found"
 msgstr "Dépôt introuvable"
 
-#: plinth/modules/backups/repository.py:65
+#: plinth/modules/backups/repository.py:70
 msgid "Incorrect encryption passphrase"
 msgstr "Phrase secrète de chiffrement incorrecte"
 
-#: plinth/modules/backups/repository.py:70
+#: plinth/modules/backups/repository.py:76
 msgid "SSH access denied"
 msgstr "Accès SSH refusé"
 
 #: plinth/modules/backups/templates/backups.html:47
-msgid "Existing backups"
+#, fuzzy
+#| msgid "Existing backups"
+msgid "Existing backup locations"
 msgstr "Sauvegardes existantes"
 
 #: plinth/modules/backups/templates/backups.html:57
@@ -309,6 +346,7 @@ msgstr "Créer un dépôt"
 #: plinth/modules/backups/templates/backups_repository_add.html:45
 #: plinth/modules/backups/templates/backups_repository_remove.html:49
 #: plinth/modules/backups/templates/backups_restore.html:52
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:61
 #: plinth/modules/ikiwiki/templates/ikiwiki_delete.html:47
 #: plinth/modules/monkeysphere/templates/monkeysphere.html:67
 #: plinth/modules/networks/templates/connections_delete.html:41
@@ -331,7 +369,7 @@ msgid ""
 msgstr ""
 
 #: plinth/modules/backups/templates/backups_repository_remove.html:46
-#: plinth/modules/backups/views.py:286
+#: plinth/modules/backups/views.py:461
 msgid "Remove Repository"
 msgstr "Supprimer ce dépôt"
 
@@ -340,7 +378,7 @@ msgid "Restore data from"
 msgstr "Restaurer les données depuis"
 
 #: plinth/modules/backups/templates/backups_restore.html:43
-#: plinth/modules/backups/views.py:186
+#: plinth/modules/backups/views.py:192
 msgid "Restore"
 msgstr "Restaurer"
 
@@ -380,55 +418,108 @@ msgstr ""
 msgid "Upload file"
 msgstr "Charger le fichier"
 
-#: plinth/modules/backups/views.py:53
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:40
+msgid "How to verify?"
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:45
+msgid ""
+"Run the following command on the SSH host machine. The output should match "
+"one of the provided options. You can also use dsa, ecdsa, ed25519 etc. "
+"instead of rsa, by choosing the corresponding file."
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:59
+msgid "Verify Host"
+msgstr ""
+
+#: plinth/modules/backups/views.py:57
 msgid "Upload"
 msgstr "Téléverser"
 
-#: plinth/modules/backups/views.py:56 plinth/modules/ikiwiki/views.py:41
+#: plinth/modules/backups/views.py:60 plinth/modules/ikiwiki/views.py:41
 msgid "Create"
 msgstr "Créer"
 
-#: plinth/modules/backups/views.py:84
+#: plinth/modules/backups/views.py:88
 msgid "Archive created."
 msgstr "Archive créée."
 
-#: plinth/modules/backups/views.py:111
+#: plinth/modules/backups/views.py:117
 msgid "Delete Archive"
 msgstr "Supprimer l'archive"
 
-#: plinth/modules/backups/views.py:123
+#: plinth/modules/backups/views.py:129
 msgid "Archive deleted."
 msgstr "Archive supprimée."
 
-#: plinth/modules/backups/views.py:174
+#: plinth/modules/backups/views.py:180
 msgid "Restored files from backup."
 msgstr "Les fichiers ont été restaurés depuis la sauvegarde."
 
-#: plinth/modules/backups/views.py:198
+#: plinth/modules/backups/views.py:208
 msgid "No backup file found."
 msgstr "Aucune sauvegarde n'a été trouvée."
 
-#: plinth/modules/backups/views.py:206
+#: plinth/modules/backups/views.py:216
 msgid "Restore from uploaded file"
 msgstr "Restaurer depuis le fichier téléversé"
 
-#: plinth/modules/backups/views.py:260
-msgid "Added new repository."
-msgstr "Ajouter une nouvelle archive."
-
-#: plinth/modules/backups/views.py:265
+#: plinth/modules/backups/views.py:272
 msgid "Create remote backup repository"
 msgstr "Créer un dépôt de sauvegarde distant"
 
-#: plinth/modules/backups/views.py:296
+#: plinth/modules/backups/views.py:292
+#, fuzzy
+#| msgid "Added new repository."
+msgid "Added new remote SSH repository."
+msgstr "Ajouter une nouvelle archive."
+
+#: plinth/modules/backups/views.py:315
+msgid "Verify SSH hostkey"
+msgstr ""
+
+#: plinth/modules/backups/views.py:349
+msgid "SSH host already verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:358
+msgid "SSH host verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:382
+msgid "SSH host public key could not be verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:384
+msgid "Authentication to remote server failed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:386
+#, fuzzy
+#| msgid "Error installing application: {error}"
+msgid "Error establishing connection to server: {}"
+msgstr "Erreur lors de l’installation de l'application :  {error}"
+
+#: plinth/modules/backups/views.py:389
+msgid "Repository path is neither empty nor is an existing backups repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:396
+#, fuzzy
+#| msgid "Repository not found"
+msgid "Repository removed."
+msgstr "Dépôt introuvable"
+
+#: plinth/modules/backups/views.py:471
 msgid "Repository removed. The remote backup itself was not deleted."
 msgstr "Dépôt supprimé. Le dépôt distant lui-même n'a pas été supprimé."
 
-#: plinth/modules/backups/views.py:304
+#: plinth/modules/backups/views.py:481
 msgid "Unmounting failed!"
 msgstr "Le démontage a échoué !"
 
-#: plinth/modules/backups/views.py:313 plinth/modules/backups/views.py:317
+#: plinth/modules/backups/views.py:496 plinth/modules/backups/views.py:500
 msgid "Mounting failed"
 msgstr "Le montage a échoué"
 
@@ -2414,7 +2505,13 @@ msgstr ""
 "Changer le nom de domaine après la configuration initiale n'est actuellement "
 "pas prise en charge."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:40
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:36
+msgid ""
+"New users can be registered from any client if public registration is "
+"enabled."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:45
 #, python-format
 msgid ""
 "\n"
@@ -5907,7 +6004,7 @@ msgstr "Langue"
 msgid "Log in"
 msgstr "S'identifier"
 
-#: plinth/templates/clients.html:28
+#: plinth/templates/clients.html:29
 msgid "Client Apps"
 msgstr ""
 
@@ -6123,6 +6220,9 @@ msgstr "Application désactivée"
 msgid "Gujarati"
 msgstr ""
 
+#~ msgid "Accessing the remote repository failed. Details: %(err)s"
+#~ msgstr "L'accès au dépôt distant a échoué. Détails : %(err)s"
+
 #~ msgid "Tor Anonymity Network"
 #~ msgstr "Réseau d'anonymat Tor"
 
diff --git a/plinth/locale/gu/LC_MESSAGES/django.po b/plinth/locale/gu/LC_MESSAGES/django.po
index 7e28ad440..39725b0d3 100644
--- a/plinth/locale/gu/LC_MESSAGES/django.po
+++ b/plinth/locale/gu/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-06-24 19:48-0400\n"
+"POT-Creation-Date: 2019-07-08 17:31-0400\n"
 "PO-Revision-Date: 2018-02-05 18:37+0000\n"
 "Last-Translator: drashti kaushik <drashtipandya37@gmail.com>\n"
 "Language-Team: Gujarati <https://hosted.weblate.org/projects/freedombox/"
@@ -126,129 +126,157 @@ msgstr ""
 "શોધવા માટે પરવાનગી આપે છે. સેવાઓ ની શોધ અનિવાર્ય નથી અને માત્ર આંતરિક નેટવર્કમાં જ કામ "
 "કરે છે. તેને નિષ્ક્રિય કરી શકાય છે, ખાસ કરી ને જયારે આપ જોખમકારક નેટવર્ક સાથે જોડતા હોવ."
 
-#: plinth/modules/backups/__init__.py:38 plinth/modules/backups/views.py:50
+#: plinth/modules/backups/__init__.py:41 plinth/modules/backups/views.py:54
 msgid "Backups"
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:41
+#: plinth/modules/backups/__init__.py:44
 msgid "Backups allows creating and managing backup archives."
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:49
+#: plinth/modules/backups/__init__.py:52
 #, python-brace-format
 msgid "{box_name} storage"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:38
+#: plinth/modules/backups/forms.py:47
 #, python-brace-format
 msgid "{app} (No data to backup)"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Included apps"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Apps to include in the backup"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:72
+#: plinth/modules/backups/forms.py:83
 msgid "Select the apps you want to restore"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:85
+#: plinth/modules/backups/forms.py:96
 msgid "Upload File"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:88
+#: plinth/modules/backups/forms.py:98
 msgid "Backup files have to be in .tar.gz format"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:89
+#: plinth/modules/backups/forms.py:99
 msgid "Select the backup file you want to upload"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:94
+#: plinth/modules/backups/forms.py:105
+msgid "Repository path format incorrect."
+msgstr ""
+
+#: plinth/modules/backups/forms.py:112
+#, fuzzy, python-brace-format
+#| msgid "Invalid server name"
+msgid "Invalid username: {username}"
+msgstr "અમાન્ય સર્વર નામ"
+
+#: plinth/modules/backups/forms.py:122
+#, fuzzy, python-brace-format
+#| msgid "Invalid hostname"
+msgid "Invalid hostname: {hostname}"
+msgstr "અમાન્ય હોસ્ટનું નામ"
+
+#: plinth/modules/backups/forms.py:126
+#, python-brace-format
+msgid "Invalid directory path: {dir_path}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:132
 msgid "SSH Repository Path"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:95
+#: plinth/modules/backups/forms.py:133
 msgid ""
 "Path of a new or existing repository. Example: <i>user@host:~/path/to/repo/</"
 "i>"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:98
+#: plinth/modules/backups/forms.py:137
 #, fuzzy
 #| msgid "Please provide a password"
 msgid "SSH server password"
 msgstr "કૃપા કરીને પાસવર્ડ આપો"
 
-#: plinth/modules/backups/forms.py:99
+#: plinth/modules/backups/forms.py:138
 msgid ""
 "Password of the SSH Server.<br />SSH key-based authentication is not yet "
 "possible."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:104
+#: plinth/modules/backups/forms.py:142
 msgid "Encryption"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:106
+#: plinth/modules/backups/forms.py:143
 msgid ""
 "\"Key in Repository\" means that a password-protected key is stored with the "
 "backup."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:111 plinth/modules/networks/forms.py:304
+#: plinth/modules/backups/forms.py:147 plinth/modules/networks/forms.py:304
 msgid "Passphrase"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:112
+#: plinth/modules/backups/forms.py:148
 msgid "Passphrase; Only needed when using encryption."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:117
+#: plinth/modules/backups/forms.py:151
 msgid "Confirm Passphrase"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:118
+#: plinth/modules/backups/forms.py:151
 msgid "Repeat the passphrase."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:139
+#: plinth/modules/backups/forms.py:162
 msgid "The entered encryption passphrases do not match"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:151
-#, python-format
-msgid "Accessing the remote repository failed. Details: %(err)s"
+#: plinth/modules/backups/forms.py:166
+msgid "Passphrase is needed for encryption."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:45
+#: plinth/modules/backups/forms.py:183
+msgid "Remote backup repository already exists."
+msgstr ""
+
+#: plinth/modules/backups/forms.py:189
+msgid "Select verified SSH public key"
+msgstr ""
+
+#: plinth/modules/backups/repository.py:46
 msgid ""
 "Connection refused - make sure you provided correct credentials and the "
 "server is running."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:51
+#: plinth/modules/backups/repository.py:53
 msgid "Connection refused"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:58
+#: plinth/modules/backups/repository.py:62
 msgid "Repository not found"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:65
+#: plinth/modules/backups/repository.py:70
 msgid "Incorrect encryption passphrase"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:70
+#: plinth/modules/backups/repository.py:76
 msgid "SSH access denied"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups.html:47
-msgid "Existing backups"
+msgid "Existing backup locations"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups.html:57
@@ -303,6 +331,7 @@ msgstr ""
 #: plinth/modules/backups/templates/backups_repository_add.html:45
 #: plinth/modules/backups/templates/backups_repository_remove.html:49
 #: plinth/modules/backups/templates/backups_restore.html:52
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:61
 #: plinth/modules/ikiwiki/templates/ikiwiki_delete.html:47
 #: plinth/modules/monkeysphere/templates/monkeysphere.html:67
 #: plinth/modules/networks/templates/connections_delete.html:41
@@ -325,7 +354,7 @@ msgid ""
 msgstr ""
 
 #: plinth/modules/backups/templates/backups_repository_remove.html:46
-#: plinth/modules/backups/views.py:286
+#: plinth/modules/backups/views.py:461
 msgid "Remove Repository"
 msgstr ""
 
@@ -334,7 +363,7 @@ msgid "Restore data from"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups_restore.html:43
-#: plinth/modules/backups/views.py:186
+#: plinth/modules/backups/views.py:192
 msgid "Restore"
 msgstr ""
 
@@ -370,55 +399,104 @@ msgstr ""
 msgid "Upload file"
 msgstr ""
 
-#: plinth/modules/backups/views.py:53
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:40
+msgid "How to verify?"
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:45
+msgid ""
+"Run the following command on the SSH host machine. The output should match "
+"one of the provided options. You can also use dsa, ecdsa, ed25519 etc. "
+"instead of rsa, by choosing the corresponding file."
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:59
+msgid "Verify Host"
+msgstr ""
+
+#: plinth/modules/backups/views.py:57
 msgid "Upload"
 msgstr ""
 
-#: plinth/modules/backups/views.py:56 plinth/modules/ikiwiki/views.py:41
+#: plinth/modules/backups/views.py:60 plinth/modules/ikiwiki/views.py:41
 msgid "Create"
 msgstr ""
 
-#: plinth/modules/backups/views.py:84
+#: plinth/modules/backups/views.py:88
 msgid "Archive created."
 msgstr ""
 
-#: plinth/modules/backups/views.py:111
+#: plinth/modules/backups/views.py:117
 msgid "Delete Archive"
 msgstr ""
 
-#: plinth/modules/backups/views.py:123
+#: plinth/modules/backups/views.py:129
 msgid "Archive deleted."
 msgstr ""
 
-#: plinth/modules/backups/views.py:174
+#: plinth/modules/backups/views.py:180
 msgid "Restored files from backup."
 msgstr ""
 
-#: plinth/modules/backups/views.py:198
+#: plinth/modules/backups/views.py:208
 msgid "No backup file found."
 msgstr ""
 
-#: plinth/modules/backups/views.py:206
+#: plinth/modules/backups/views.py:216
 msgid "Restore from uploaded file"
 msgstr ""
 
-#: plinth/modules/backups/views.py:260
-msgid "Added new repository."
-msgstr ""
-
-#: plinth/modules/backups/views.py:265
+#: plinth/modules/backups/views.py:272
 msgid "Create remote backup repository"
 msgstr ""
 
-#: plinth/modules/backups/views.py:296
+#: plinth/modules/backups/views.py:292
+msgid "Added new remote SSH repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:315
+msgid "Verify SSH hostkey"
+msgstr ""
+
+#: plinth/modules/backups/views.py:349
+msgid "SSH host already verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:358
+msgid "SSH host verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:382
+msgid "SSH host public key could not be verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:384
+msgid "Authentication to remote server failed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:386
+#, fuzzy
+#| msgid "Error installing application: {error}"
+msgid "Error establishing connection to server: {}"
+msgstr "એપ્લીકેશન પ્રસ્થાપિત કરતાં ભૂલ થઇ છે: {error}"
+
+#: plinth/modules/backups/views.py:389
+msgid "Repository path is neither empty nor is an existing backups repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:396
+msgid "Repository removed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:471
 msgid "Repository removed. The remote backup itself was not deleted."
 msgstr ""
 
-#: plinth/modules/backups/views.py:304
+#: plinth/modules/backups/views.py:481
 msgid "Unmounting failed!"
 msgstr ""
 
-#: plinth/modules/backups/views.py:313 plinth/modules/backups/views.py:317
+#: plinth/modules/backups/views.py:496 plinth/modules/backups/views.py:500
 msgid "Mounting failed"
 msgstr ""
 
@@ -2168,7 +2246,13 @@ msgid ""
 "the initial setup is currently not supported."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:40
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:36
+msgid ""
+"New users can be registered from any client if public registration is "
+"enabled."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:45
 #, python-format
 msgid ""
 "\n"
@@ -5229,7 +5313,7 @@ msgstr "ભાષા"
 msgid "Log in"
 msgstr ""
 
-#: plinth/templates/clients.html:28
+#: plinth/templates/clients.html:29
 #, fuzzy
 #| msgid "BitTorrent Web Client"
 msgid "Client Apps"
diff --git a/plinth/locale/hi/LC_MESSAGES/django.po b/plinth/locale/hi/LC_MESSAGES/django.po
index 6685626f8..e8d84bd43 100644
--- a/plinth/locale/hi/LC_MESSAGES/django.po
+++ b/plinth/locale/hi/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-06-24 19:48-0400\n"
+"POT-Creation-Date: 2019-07-08 17:31-0400\n"
 "PO-Revision-Date: 2018-08-09 20:39+0000\n"
 "Last-Translator: Gayathri Das <gaya3das@live.unc.edu>\n"
 "Language-Team: Hindi <https://hosted.weblate.org/projects/freedombox/plinth/"
@@ -125,140 +125,168 @@ msgstr ""
 "सुरक्षा के लिये, ख़ास तौर पर एक अनजान नेटवर्क से जोड़ करके समय, सर्विस डिस्कोवरि बंद कर "
 "सकते हैं."
 
-#: plinth/modules/backups/__init__.py:38 plinth/modules/backups/views.py:50
+#: plinth/modules/backups/__init__.py:41 plinth/modules/backups/views.py:54
 msgid "Backups"
 msgstr "बैकअप"
 
-#: plinth/modules/backups/__init__.py:41
+#: plinth/modules/backups/__init__.py:44
 msgid "Backups allows creating and managing backup archives."
 msgstr "बैकअपस पुरालेखागार बनाने और  प्रबंधित करने की अनुमति देता है."
 
-#: plinth/modules/backups/__init__.py:49
+#: plinth/modules/backups/__init__.py:52
 #, fuzzy, python-brace-format
 #| msgid "{box_name} Manual"
 msgid "{box_name} storage"
 msgstr "{box_name} मैनुअल"
 
-#: plinth/modules/backups/forms.py:38
+#: plinth/modules/backups/forms.py:47
 #, python-brace-format
 msgid "{app} (No data to backup)"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Included apps"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Apps to include in the backup"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:72
+#: plinth/modules/backups/forms.py:83
 #, fuzzy
 #| msgid "The subdomain you want to register"
 msgid "Select the apps you want to restore"
 msgstr "जो सबडोमेन आप पंजीकृत करना चाहते हैं"
 
-#: plinth/modules/backups/forms.py:85
+#: plinth/modules/backups/forms.py:96
 msgid "Upload File"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:88
+#: plinth/modules/backups/forms.py:98
 msgid "Backup files have to be in .tar.gz format"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:89
+#: plinth/modules/backups/forms.py:99
 msgid "Select the backup file you want to upload"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:94
+#: plinth/modules/backups/forms.py:105
+msgid "Repository path format incorrect."
+msgstr ""
+
+#: plinth/modules/backups/forms.py:112
+#, fuzzy, python-brace-format
+#| msgid "Invalid server name"
+msgid "Invalid username: {username}"
+msgstr "सर्वर नाम अमान्य है"
+
+#: plinth/modules/backups/forms.py:122
+#, fuzzy, python-brace-format
+#| msgid "Invalid hostname"
+msgid "Invalid hostname: {hostname}"
+msgstr "अमान्य होस्टनाम"
+
+#: plinth/modules/backups/forms.py:126
+#, python-brace-format
+msgid "Invalid directory path: {dir_path}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:132
 msgid "SSH Repository Path"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:95
+#: plinth/modules/backups/forms.py:133
 msgid ""
 "Path of a new or existing repository. Example: <i>user@host:~/path/to/repo/</"
 "i>"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:98
+#: plinth/modules/backups/forms.py:137
 #, fuzzy
 #| msgid "Save Password"
 msgid "SSH server password"
 msgstr "पासवर्ड सहेजें"
 
-#: plinth/modules/backups/forms.py:99
+#: plinth/modules/backups/forms.py:138
 msgid ""
 "Password of the SSH Server.<br />SSH key-based authentication is not yet "
 "possible."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:104
+#: plinth/modules/backups/forms.py:142
 #, fuzzy
 #| msgid "Description"
 msgid "Encryption"
 msgstr "विवरण"
 
-#: plinth/modules/backups/forms.py:106
+#: plinth/modules/backups/forms.py:143
 msgid ""
 "\"Key in Repository\" means that a password-protected key is stored with the "
 "backup."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:111 plinth/modules/networks/forms.py:304
+#: plinth/modules/backups/forms.py:147 plinth/modules/networks/forms.py:304
 msgid "Passphrase"
 msgstr "पासफ्रेज़"
 
-#: plinth/modules/backups/forms.py:112
+#: plinth/modules/backups/forms.py:148
 msgid "Passphrase; Only needed when using encryption."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:117
+#: plinth/modules/backups/forms.py:151
 #, fuzzy
 #| msgid "Passphrase"
 msgid "Confirm Passphrase"
 msgstr "पासफ्रेज़"
 
-#: plinth/modules/backups/forms.py:118
+#: plinth/modules/backups/forms.py:151
 msgid "Repeat the passphrase."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:139
+#: plinth/modules/backups/forms.py:162
 msgid "The entered encryption passphrases do not match"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:151
-#, python-format
-msgid "Accessing the remote repository failed. Details: %(err)s"
+#: plinth/modules/backups/forms.py:166
+msgid "Passphrase is needed for encryption."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:45
+#: plinth/modules/backups/forms.py:183
+msgid "Remote backup repository already exists."
+msgstr ""
+
+#: plinth/modules/backups/forms.py:189
+msgid "Select verified SSH public key"
+msgstr ""
+
+#: plinth/modules/backups/repository.py:46
 msgid ""
 "Connection refused - make sure you provided correct credentials and the "
 "server is running."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:51
+#: plinth/modules/backups/repository.py:53
 #, fuzzy
 #| msgid "Connection Type"
 msgid "Connection refused"
 msgstr "कनेक्शन टाइप"
 
-#: plinth/modules/backups/repository.py:58
+#: plinth/modules/backups/repository.py:62
 msgid "Repository not found"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:65
+#: plinth/modules/backups/repository.py:70
 msgid "Incorrect encryption passphrase"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:70
+#: plinth/modules/backups/repository.py:76
 msgid "SSH access denied"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups.html:47
 #, fuzzy
 #| msgid "Existing custom services"
-msgid "Existing backups"
+msgid "Existing backup locations"
 msgstr "मौजूदा कस्टम सर्विसस"
 
 #: plinth/modules/backups/templates/backups.html:57
@@ -317,6 +345,7 @@ msgstr "यूसर बनाये"
 #: plinth/modules/backups/templates/backups_repository_add.html:45
 #: plinth/modules/backups/templates/backups_repository_remove.html:49
 #: plinth/modules/backups/templates/backups_restore.html:52
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:61
 #: plinth/modules/ikiwiki/templates/ikiwiki_delete.html:47
 #: plinth/modules/monkeysphere/templates/monkeysphere.html:67
 #: plinth/modules/networks/templates/connections_delete.html:41
@@ -339,7 +368,7 @@ msgid ""
 msgstr ""
 
 #: plinth/modules/backups/templates/backups_repository_remove.html:46
-#: plinth/modules/backups/views.py:286
+#: plinth/modules/backups/views.py:461
 msgid "Remove Repository"
 msgstr ""
 
@@ -350,7 +379,7 @@ msgid "Restore data from"
 msgstr "रीस्‍टोर"
 
 #: plinth/modules/backups/templates/backups_restore.html:43
-#: plinth/modules/backups/views.py:186
+#: plinth/modules/backups/views.py:192
 #, fuzzy
 #| msgid "reStore"
 msgid "Restore"
@@ -392,61 +421,110 @@ msgstr ""
 msgid "Upload file"
 msgstr "मेरी प्रोफ़ाइल डाउनलोड करें"
 
-#: plinth/modules/backups/views.py:53
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:40
+msgid "How to verify?"
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:45
+msgid ""
+"Run the following command on the SSH host machine. The output should match "
+"one of the provided options. You can also use dsa, ecdsa, ed25519 etc. "
+"instead of rsa, by choosing the corresponding file."
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:59
+msgid "Verify Host"
+msgstr ""
+
+#: plinth/modules/backups/views.py:57
 #, fuzzy
 #| msgid "Download my profile"
 msgid "Upload"
 msgstr "मेरी प्रोफ़ाइल डाउनलोड करें"
 
-#: plinth/modules/backups/views.py:56 plinth/modules/ikiwiki/views.py:41
+#: plinth/modules/backups/views.py:60 plinth/modules/ikiwiki/views.py:41
 msgid "Create"
 msgstr "बनाइये"
 
-#: plinth/modules/backups/views.py:84
+#: plinth/modules/backups/views.py:88
 msgid "Archive created."
 msgstr "पुरालेख बनाया गया."
 
-#: plinth/modules/backups/views.py:111
+#: plinth/modules/backups/views.py:117
 msgid "Delete Archive"
 msgstr "पुरालेख हटाईये"
 
-#: plinth/modules/backups/views.py:123
+#: plinth/modules/backups/views.py:129
 msgid "Archive deleted."
 msgstr "पुरालेख हटा गया है."
 
-#: plinth/modules/backups/views.py:174
+#: plinth/modules/backups/views.py:180
 msgid "Restored files from backup."
 msgstr ""
 
-#: plinth/modules/backups/views.py:198
+#: plinth/modules/backups/views.py:208
 #, fuzzy
 #| msgid "Name for new backup archive."
 msgid "No backup file found."
 msgstr "नया बैकअप पुरालेख के लिये नाम."
 
-#: plinth/modules/backups/views.py:206
+#: plinth/modules/backups/views.py:216
 msgid "Restore from uploaded file"
 msgstr ""
 
-#: plinth/modules/backups/views.py:260
-#, fuzzy
-#| msgid "Add new introducer"
-msgid "Added new repository."
-msgstr "नया इंट्रोड्यूसर जोड़ें"
-
-#: plinth/modules/backups/views.py:265
+#: plinth/modules/backups/views.py:272
 msgid "Create remote backup repository"
 msgstr ""
 
-#: plinth/modules/backups/views.py:296
+#: plinth/modules/backups/views.py:292
+#, fuzzy
+#| msgid "Add new introducer"
+msgid "Added new remote SSH repository."
+msgstr "नया इंट्रोड्यूसर जोड़ें"
+
+#: plinth/modules/backups/views.py:315
+msgid "Verify SSH hostkey"
+msgstr ""
+
+#: plinth/modules/backups/views.py:349
+msgid "SSH host already verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:358
+msgid "SSH host verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:382
+msgid "SSH host public key could not be verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:384
+msgid "Authentication to remote server failed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:386
+#, fuzzy
+#| msgid "Error installing application: {error}"
+msgid "Error establishing connection to server: {}"
+msgstr "एप्लिकेशन नहीं इंस्टॉल जा सकता: {error}"
+
+#: plinth/modules/backups/views.py:389
+msgid "Repository path is neither empty nor is an existing backups repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:396
+msgid "Repository removed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:471
 msgid "Repository removed. The remote backup itself was not deleted."
 msgstr ""
 
-#: plinth/modules/backups/views.py:304
+#: plinth/modules/backups/views.py:481
 msgid "Unmounting failed!"
 msgstr ""
 
-#: plinth/modules/backups/views.py:313 plinth/modules/backups/views.py:317
+#: plinth/modules/backups/views.py:496 plinth/modules/backups/views.py:500
 #, fuzzy
 #| msgid "The operation failed."
 msgid "Mounting failed"
@@ -2387,7 +2465,13 @@ msgstr ""
 "दिखाई देगा <em>@username:%(domain_name)s</em>. प्रारंभिक सेटअप के बाद डोमेन नाम "
 "बदलना करना वर्तमान मे समर्थित नहीं है."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:40
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:36
+msgid ""
+"New users can be registered from any client if public registration is "
+"enabled."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:45
 #, python-format
 msgid ""
 "\n"
@@ -5777,7 +5861,7 @@ msgstr "भाषा चुनें"
 msgid "Log in"
 msgstr "लॉग इन"
 
-#: plinth/templates/clients.html:28
+#: plinth/templates/clients.html:29
 msgid "Client Apps"
 msgstr "क्लाइंट ऐप्स"
 
diff --git a/plinth/locale/hu/LC_MESSAGES/django.po b/plinth/locale/hu/LC_MESSAGES/django.po
index 711ea01a9..601a4ea01 100644
--- a/plinth/locale/hu/LC_MESSAGES/django.po
+++ b/plinth/locale/hu/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-06-24 19:48-0400\n"
+"POT-Creation-Date: 2019-07-08 17:31-0400\n"
 "PO-Revision-Date: 2019-06-30 01:00+0000\n"
 "Last-Translator: Doma Gergő <domag02@gmail.com>\n"
 "Language-Team: Hungarian <https://hosted.weblate.org/projects/freedombox/"
@@ -127,53 +127,76 @@ msgstr ""
 "kizárólag a belső hálózaton működik. Kikapcsolható a biztonság növelése "
 "érdekében, különösen nem megbízható hálózatok esetén."
 
-#: plinth/modules/backups/__init__.py:38 plinth/modules/backups/views.py:50
+#: plinth/modules/backups/__init__.py:41 plinth/modules/backups/views.py:54
 msgid "Backups"
 msgstr "Biztonsági másolatok"
 
-#: plinth/modules/backups/__init__.py:41
+#: plinth/modules/backups/__init__.py:44
 msgid "Backups allows creating and managing backup archives."
 msgstr "Lehetővé teszi a biztonsági másolatok létrehozását és kezelését."
 
-#: plinth/modules/backups/__init__.py:49
+#: plinth/modules/backups/__init__.py:52
 #, python-brace-format
 msgid "{box_name} storage"
 msgstr "{box_name} tároló"
 
-#: plinth/modules/backups/forms.py:38
+#: plinth/modules/backups/forms.py:47
 #, python-brace-format
 msgid "{app} (No data to backup)"
 msgstr "{app} (Nincs mit menteni)"
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Included apps"
 msgstr "Bennfoglalt alkalmazások"
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Apps to include in the backup"
 msgstr "Alkalmazások, melyek benne lesznek a biztonsági másolatban"
 
-#: plinth/modules/backups/forms.py:72
+#: plinth/modules/backups/forms.py:83
 msgid "Select the apps you want to restore"
 msgstr "Válaszd ki a visszaállítandó alkalmazásokat"
 
-#: plinth/modules/backups/forms.py:85
+#: plinth/modules/backups/forms.py:96
 msgid "Upload File"
 msgstr "Fájl feltöltése"
 
-#: plinth/modules/backups/forms.py:88
+#: plinth/modules/backups/forms.py:98
 msgid "Backup files have to be in .tar.gz format"
 msgstr "A biztonsági másolatoknak .tar.gz formátumúaknak kell lenniük"
 
-#: plinth/modules/backups/forms.py:89
+#: plinth/modules/backups/forms.py:99
 msgid "Select the backup file you want to upload"
 msgstr "Válaszd ki a feltölteni kívánt biztonsági másolatot"
 
-#: plinth/modules/backups/forms.py:94
+#: plinth/modules/backups/forms.py:105
+#, fuzzy
+#| msgid "Repository not found"
+msgid "Repository path format incorrect."
+msgstr "Tároló nem található"
+
+#: plinth/modules/backups/forms.py:112
+#, fuzzy, python-brace-format
+#| msgid "Invalid server name"
+msgid "Invalid username: {username}"
+msgstr "Érvénytelen kiszolgálónév"
+
+#: plinth/modules/backups/forms.py:122
+#, fuzzy, python-brace-format
+#| msgid "Invalid hostname"
+msgid "Invalid hostname: {hostname}"
+msgstr "Érvénytelen állomásnév"
+
+#: plinth/modules/backups/forms.py:126
+#, python-brace-format
+msgid "Invalid directory path: {dir_path}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:132
 msgid "SSH Repository Path"
 msgstr "SSH tároló elérési útja"
 
-#: plinth/modules/backups/forms.py:95
+#: plinth/modules/backups/forms.py:133
 msgid ""
 "Path of a new or existing repository. Example: <i>user@host:~/path/to/repo/</"
 "i>"
@@ -181,11 +204,11 @@ msgstr ""
 "Új vagy már létező tároló elérési útja. Például: <i>felhasznalo@hoszt:~/"
 "eleresi/ut/az/adattarhoz/</i>"
 
-#: plinth/modules/backups/forms.py:98
+#: plinth/modules/backups/forms.py:137
 msgid "SSH server password"
 msgstr "SSH kiszolgáló jelszava"
 
-#: plinth/modules/backups/forms.py:99
+#: plinth/modules/backups/forms.py:138
 msgid ""
 "Password of the SSH Server.<br />SSH key-based authentication is not yet "
 "possible."
@@ -193,11 +216,11 @@ msgstr ""
 "Jelszó az SSH kiszolgálóhoz.<br />SSH kulcs alapú azonosítás még nem "
 "lehetséges."
 
-#: plinth/modules/backups/forms.py:104
+#: plinth/modules/backups/forms.py:142
 msgid "Encryption"
 msgstr "Titkosítás"
 
-#: plinth/modules/backups/forms.py:106
+#: plinth/modules/backups/forms.py:143
 msgid ""
 "\"Key in Repository\" means that a password-protected key is stored with the "
 "backup."
@@ -205,32 +228,43 @@ msgstr ""
 "A \"Kulcs a tárolóban\" azt jelenti, hogy a jelszóval védett kulcs a "
 "biztonsági mentéssel együtt van tárolva."
 
-#: plinth/modules/backups/forms.py:111 plinth/modules/networks/forms.py:304
+#: plinth/modules/backups/forms.py:147 plinth/modules/networks/forms.py:304
 msgid "Passphrase"
 msgstr "Jelszó"
 
-#: plinth/modules/backups/forms.py:112
+#: plinth/modules/backups/forms.py:148
 msgid "Passphrase; Only needed when using encryption."
 msgstr "Jelszó, csak akkor szükséges ha titkosítást is használsz."
 
-#: plinth/modules/backups/forms.py:117
+#: plinth/modules/backups/forms.py:151
 msgid "Confirm Passphrase"
 msgstr "Jelszó megerősítése"
 
-#: plinth/modules/backups/forms.py:118
+#: plinth/modules/backups/forms.py:151
 msgid "Repeat the passphrase."
 msgstr "Ismételd meg a jelszót."
 
-#: plinth/modules/backups/forms.py:139
+#: plinth/modules/backups/forms.py:162
 msgid "The entered encryption passphrases do not match"
 msgstr "A megadott titkosítási jelszavak nem egyeznek meg"
 
-#: plinth/modules/backups/forms.py:151
-#, python-format
-msgid "Accessing the remote repository failed. Details: %(err)s"
-msgstr "Sikertelen a távoli tárolóhoz való hozzáférés. Részletek: %(err)s"
+#: plinth/modules/backups/forms.py:166
+#, fuzzy
+#| msgid "Passphrase; Only needed when using encryption."
+msgid "Passphrase is needed for encryption."
+msgstr "Jelszó, csak akkor szükséges ha titkosítást is használsz."
 
-#: plinth/modules/backups/repository.py:45
+#: plinth/modules/backups/forms.py:183
+#, fuzzy
+#| msgid "Create remote backup repository"
+msgid "Remote backup repository already exists."
+msgstr "Távoli biztonsági másolat tároló létrehozása"
+
+#: plinth/modules/backups/forms.py:189
+msgid "Select verified SSH public key"
+msgstr ""
+
+#: plinth/modules/backups/repository.py:46
 msgid ""
 "Connection refused - make sure you provided correct credentials and the "
 "server is running."
@@ -238,24 +272,26 @@ msgstr ""
 "Kapcsolat elutasítva – győződj meg róla hogy a megfelelő hitelesítő adatokat "
 "adtad meg és hogy a kiszolgáló is üzemel."
 
-#: plinth/modules/backups/repository.py:51
+#: plinth/modules/backups/repository.py:53
 msgid "Connection refused"
 msgstr "Kapcsolat elutasítva"
 
-#: plinth/modules/backups/repository.py:58
+#: plinth/modules/backups/repository.py:62
 msgid "Repository not found"
 msgstr "Tároló nem található"
 
-#: plinth/modules/backups/repository.py:65
+#: plinth/modules/backups/repository.py:70
 msgid "Incorrect encryption passphrase"
 msgstr "Helytelen titkosítási jelszó"
 
-#: plinth/modules/backups/repository.py:70
+#: plinth/modules/backups/repository.py:76
 msgid "SSH access denied"
 msgstr "SSH hozzáférés megtagadva"
 
 #: plinth/modules/backups/templates/backups.html:47
-msgid "Existing backups"
+#, fuzzy
+#| msgid "Existing backups"
+msgid "Existing backup locations"
 msgstr "Meglévő biztonsági másolatok"
 
 #: plinth/modules/backups/templates/backups.html:57
@@ -312,6 +348,7 @@ msgstr "Tároló létrehozása"
 #: plinth/modules/backups/templates/backups_repository_add.html:45
 #: plinth/modules/backups/templates/backups_repository_remove.html:49
 #: plinth/modules/backups/templates/backups_restore.html:52
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:61
 #: plinth/modules/ikiwiki/templates/ikiwiki_delete.html:47
 #: plinth/modules/monkeysphere/templates/monkeysphere.html:67
 #: plinth/modules/networks/templates/connections_delete.html:41
@@ -339,7 +376,7 @@ msgstr ""
 "    "
 
 #: plinth/modules/backups/templates/backups_repository_remove.html:46
-#: plinth/modules/backups/views.py:286
+#: plinth/modules/backups/views.py:461
 msgid "Remove Repository"
 msgstr "Tároló eltávolítása"
 
@@ -348,7 +385,7 @@ msgid "Restore data from"
 msgstr "Adatok visszaállítása"
 
 #: plinth/modules/backups/templates/backups_restore.html:43
-#: plinth/modules/backups/views.py:186
+#: plinth/modules/backups/views.py:192
 msgid "Restore"
 msgstr "Visszaállít"
 
@@ -394,57 +431,110 @@ msgstr ""
 msgid "Upload file"
 msgstr "Fájl feltöltése"
 
-#: plinth/modules/backups/views.py:53
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:40
+msgid "How to verify?"
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:45
+msgid ""
+"Run the following command on the SSH host machine. The output should match "
+"one of the provided options. You can also use dsa, ecdsa, ed25519 etc. "
+"instead of rsa, by choosing the corresponding file."
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:59
+msgid "Verify Host"
+msgstr ""
+
+#: plinth/modules/backups/views.py:57
 msgid "Upload"
 msgstr "Feltöltés"
 
-#: plinth/modules/backups/views.py:56 plinth/modules/ikiwiki/views.py:41
+#: plinth/modules/backups/views.py:60 plinth/modules/ikiwiki/views.py:41
 msgid "Create"
 msgstr "Létrehoz"
 
-#: plinth/modules/backups/views.py:84
+#: plinth/modules/backups/views.py:88
 msgid "Archive created."
 msgstr "Archívum létrehozva."
 
-#: plinth/modules/backups/views.py:111
+#: plinth/modules/backups/views.py:117
 msgid "Delete Archive"
 msgstr "Archívum törlése"
 
-#: plinth/modules/backups/views.py:123
+#: plinth/modules/backups/views.py:129
 msgid "Archive deleted."
 msgstr "Archívum törölve."
 
-#: plinth/modules/backups/views.py:174
+#: plinth/modules/backups/views.py:180
 msgid "Restored files from backup."
 msgstr "Fájlok visszaállítva a biztonsági mentésből."
 
-#: plinth/modules/backups/views.py:198
+#: plinth/modules/backups/views.py:208
 msgid "No backup file found."
 msgstr "Biztonsági másolat fájl nem található."
 
-#: plinth/modules/backups/views.py:206
+#: plinth/modules/backups/views.py:216
 msgid "Restore from uploaded file"
 msgstr "Visszaállítás a feltöltött fájlból"
 
-#: plinth/modules/backups/views.py:260
-msgid "Added new repository."
-msgstr "Új tároló hozzáadva."
-
-#: plinth/modules/backups/views.py:265
+#: plinth/modules/backups/views.py:272
 msgid "Create remote backup repository"
 msgstr "Távoli biztonsági másolat tároló létrehozása"
 
-#: plinth/modules/backups/views.py:296
+#: plinth/modules/backups/views.py:292
+#, fuzzy
+#| msgid "Added new repository."
+msgid "Added new remote SSH repository."
+msgstr "Új tároló hozzáadva."
+
+#: plinth/modules/backups/views.py:315
+msgid "Verify SSH hostkey"
+msgstr ""
+
+#: plinth/modules/backups/views.py:349
+msgid "SSH host already verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:358
+msgid "SSH host verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:382
+msgid "SSH host public key could not be verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:384
+msgid "Authentication to remote server failed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:386
+#, fuzzy
+#| msgid "Error installing application: {error}"
+msgid "Error establishing connection to server: {}"
+msgstr "Hiba lépett fel az alkalmazás telepítésekor: {error}"
+
+#: plinth/modules/backups/views.py:389
+msgid "Repository path is neither empty nor is an existing backups repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:396
+#, fuzzy
+#| msgid "Repository not found"
+msgid "Repository removed."
+msgstr "Tároló nem található"
+
+#: plinth/modules/backups/views.py:471
 msgid "Repository removed. The remote backup itself was not deleted."
 msgstr ""
 "Tároló eltávolítva. Viszont maga a távoli biztonsági mentés nem lett "
 "kitörölve."
 
-#: plinth/modules/backups/views.py:304
+#: plinth/modules/backups/views.py:481
 msgid "Unmounting failed!"
 msgstr "Lecsatolás sikertelen!"
 
-#: plinth/modules/backups/views.py:313 plinth/modules/backups/views.py:317
+#: plinth/modules/backups/views.py:496 plinth/modules/backups/views.py:500
 msgid "Mounting failed"
 msgstr "Felcsatolás sikertelen"
 
@@ -2396,7 +2486,13 @@ msgstr ""
 "%(domain_name)s</em>. A domain név megváltoztatása a kezdeti beállítás után "
 "jelenleg nem támogatott."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:40
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:36
+msgid ""
+"New users can be registered from any client if public registration is "
+"enabled."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:45
 #, python-format
 msgid ""
 "\n"
@@ -5891,7 +5987,7 @@ msgstr "Válassz nyelvet"
 msgid "Log in"
 msgstr "Bejelentkezés"
 
-#: plinth/templates/clients.html:28
+#: plinth/templates/clients.html:29
 msgid "Client Apps"
 msgstr "Kliens alkalmazások"
 
@@ -6110,6 +6206,9 @@ msgstr "Alkalmazás letiltva"
 msgid "Gujarati"
 msgstr "Gudzsaráti"
 
+#~ msgid "Accessing the remote repository failed. Details: %(err)s"
+#~ msgstr "Sikertelen a távoli tárolóhoz való hozzáférés. Részletek: %(err)s"
+
 #~ msgid "Tor Anonymity Network"
 #~ msgstr "Tor anonim hálózat"
 
diff --git a/plinth/locale/id/LC_MESSAGES/django.po b/plinth/locale/id/LC_MESSAGES/django.po
index 34360b06f..157948015 100644
--- a/plinth/locale/id/LC_MESSAGES/django.po
+++ b/plinth/locale/id/LC_MESSAGES/django.po
@@ -2,7 +2,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Indonesian (FreedomBox)\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-06-24 19:48-0400\n"
+"POT-Creation-Date: 2019-07-08 17:31-0400\n"
 "PO-Revision-Date: 2018-11-02 00:44+0000\n"
 "Last-Translator: ButterflyOfFire <ButterflyOfFire@protonmail.com>\n"
 "Language-Team: Indonesian <https://hosted.weblate.org/projects/freedombox/"
@@ -116,136 +116,162 @@ msgid ""
 "network."
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:38 plinth/modules/backups/views.py:50
+#: plinth/modules/backups/__init__.py:41 plinth/modules/backups/views.py:54
 msgid "Backups"
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:41
+#: plinth/modules/backups/__init__.py:44
 msgid "Backups allows creating and managing backup archives."
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:49
+#: plinth/modules/backups/__init__.py:52
 #, fuzzy, python-brace-format
 #| msgid "{box_name} Manual"
 msgid "{box_name} storage"
 msgstr "Panduan {box_name}"
 
-#: plinth/modules/backups/forms.py:38
+#: plinth/modules/backups/forms.py:47
 #, python-brace-format
 msgid "{app} (No data to backup)"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Included apps"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Apps to include in the backup"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:72
+#: plinth/modules/backups/forms.py:83
 msgid "Select the apps you want to restore"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:85
+#: plinth/modules/backups/forms.py:96
 msgid "Upload File"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:88
+#: plinth/modules/backups/forms.py:98
 msgid "Backup files have to be in .tar.gz format"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:89
+#: plinth/modules/backups/forms.py:99
 msgid "Select the backup file you want to upload"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:94
+#: plinth/modules/backups/forms.py:105
+msgid "Repository path format incorrect."
+msgstr ""
+
+#: plinth/modules/backups/forms.py:112
+#, python-brace-format
+msgid "Invalid username: {username}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:122
+#, python-brace-format
+msgid "Invalid hostname: {hostname}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:126
+#, python-brace-format
+msgid "Invalid directory path: {dir_path}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:132
 msgid "SSH Repository Path"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:95
+#: plinth/modules/backups/forms.py:133
 msgid ""
 "Path of a new or existing repository. Example: <i>user@host:~/path/to/repo/</"
 "i>"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:98
+#: plinth/modules/backups/forms.py:137
 #, fuzzy
 #| msgid "Show password"
 msgid "SSH server password"
 msgstr "Tampilkan kata sandi"
 
-#: plinth/modules/backups/forms.py:99
+#: plinth/modules/backups/forms.py:138
 msgid ""
 "Password of the SSH Server.<br />SSH key-based authentication is not yet "
 "possible."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:104
+#: plinth/modules/backups/forms.py:142
 #, fuzzy
 #| msgid "Connection"
 msgid "Encryption"
 msgstr "Koneksi"
 
-#: plinth/modules/backups/forms.py:106
+#: plinth/modules/backups/forms.py:143
 msgid ""
 "\"Key in Repository\" means that a password-protected key is stored with the "
 "backup."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:111 plinth/modules/networks/forms.py:304
+#: plinth/modules/backups/forms.py:147 plinth/modules/networks/forms.py:304
 #, fuzzy
 msgid "Passphrase"
 msgstr "Passphrase"
 
-#: plinth/modules/backups/forms.py:112
+#: plinth/modules/backups/forms.py:148
 msgid "Passphrase; Only needed when using encryption."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:117
+#: plinth/modules/backups/forms.py:151
 #, fuzzy
 msgid "Confirm Passphrase"
 msgstr "Passphrase"
 
-#: plinth/modules/backups/forms.py:118
+#: plinth/modules/backups/forms.py:151
 msgid "Repeat the passphrase."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:139
+#: plinth/modules/backups/forms.py:162
 msgid "The entered encryption passphrases do not match"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:151
-#, python-format
-msgid "Accessing the remote repository failed. Details: %(err)s"
+#: plinth/modules/backups/forms.py:166
+msgid "Passphrase is needed for encryption."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:45
+#: plinth/modules/backups/forms.py:183
+msgid "Remote backup repository already exists."
+msgstr ""
+
+#: plinth/modules/backups/forms.py:189
+msgid "Select verified SSH public key"
+msgstr ""
+
+#: plinth/modules/backups/repository.py:46
 msgid ""
 "Connection refused - make sure you provided correct credentials and the "
 "server is running."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:51
+#: plinth/modules/backups/repository.py:53
 #, fuzzy
 #| msgid "Connection Type"
 msgid "Connection refused"
 msgstr "Tipe Koneksi"
 
-#: plinth/modules/backups/repository.py:58
+#: plinth/modules/backups/repository.py:62
 msgid "Repository not found"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:65
+#: plinth/modules/backups/repository.py:70
 msgid "Incorrect encryption passphrase"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:70
+#: plinth/modules/backups/repository.py:76
 msgid "SSH access denied"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups.html:47
-msgid "Existing backups"
+msgid "Existing backup locations"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups.html:57
@@ -301,6 +327,7 @@ msgstr ""
 #: plinth/modules/backups/templates/backups_repository_add.html:45
 #: plinth/modules/backups/templates/backups_repository_remove.html:49
 #: plinth/modules/backups/templates/backups_restore.html:52
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:61
 #: plinth/modules/ikiwiki/templates/ikiwiki_delete.html:47
 #: plinth/modules/monkeysphere/templates/monkeysphere.html:67
 #: plinth/modules/networks/templates/connections_delete.html:41
@@ -323,7 +350,7 @@ msgid ""
 msgstr ""
 
 #: plinth/modules/backups/templates/backups_repository_remove.html:46
-#: plinth/modules/backups/views.py:286
+#: plinth/modules/backups/views.py:461
 msgid "Remove Repository"
 msgstr ""
 
@@ -334,7 +361,7 @@ msgid "Restore data from"
 msgstr "Hapus %(name)s"
 
 #: plinth/modules/backups/templates/backups_restore.html:43
-#: plinth/modules/backups/views.py:186
+#: plinth/modules/backups/views.py:192
 #, fuzzy
 #| msgid "Restart Now"
 msgid "Restore"
@@ -376,61 +403,110 @@ msgstr ""
 msgid "Upload file"
 msgstr "Unduh profil saya"
 
-#: plinth/modules/backups/views.py:53
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:40
+msgid "How to verify?"
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:45
+msgid ""
+"Run the following command on the SSH host machine. The output should match "
+"one of the provided options. You can also use dsa, ecdsa, ed25519 etc. "
+"instead of rsa, by choosing the corresponding file."
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:59
+msgid "Verify Host"
+msgstr ""
+
+#: plinth/modules/backups/views.py:57
 #, fuzzy
 #| msgid "Download my profile"
 msgid "Upload"
 msgstr "Unduh profil saya"
 
-#: plinth/modules/backups/views.py:56 plinth/modules/ikiwiki/views.py:41
+#: plinth/modules/backups/views.py:60 plinth/modules/ikiwiki/views.py:41
 msgid "Create"
 msgstr "Buat"
 
-#: plinth/modules/backups/views.py:84
+#: plinth/modules/backups/views.py:88
 msgid "Archive created."
 msgstr ""
 
-#: plinth/modules/backups/views.py:111
+#: plinth/modules/backups/views.py:117
 #, fuzzy
 #| msgid "Delete"
 msgid "Delete Archive"
 msgstr "Hapus"
 
-#: plinth/modules/backups/views.py:123
+#: plinth/modules/backups/views.py:129
 #, fuzzy
 #| msgid "{name} deleted."
 msgid "Archive deleted."
 msgstr "{name} dihapus."
 
-#: plinth/modules/backups/views.py:174
+#: plinth/modules/backups/views.py:180
 msgid "Restored files from backup."
 msgstr ""
 
-#: plinth/modules/backups/views.py:198
+#: plinth/modules/backups/views.py:208
 msgid "No backup file found."
 msgstr ""
 
-#: plinth/modules/backups/views.py:206
+#: plinth/modules/backups/views.py:216
 msgid "Restore from uploaded file"
 msgstr ""
 
-#: plinth/modules/backups/views.py:260
-msgid "Added new repository."
-msgstr ""
-
-#: plinth/modules/backups/views.py:265
+#: plinth/modules/backups/views.py:272
 msgid "Create remote backup repository"
 msgstr ""
 
-#: plinth/modules/backups/views.py:296
+#: plinth/modules/backups/views.py:292
+msgid "Added new remote SSH repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:315
+msgid "Verify SSH hostkey"
+msgstr ""
+
+#: plinth/modules/backups/views.py:349
+msgid "SSH host already verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:358
+msgid "SSH host verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:382
+msgid "SSH host public key could not be verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:384
+msgid "Authentication to remote server failed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:386
+#, fuzzy
+#| msgid "Error installing application: {error}"
+msgid "Error establishing connection to server: {}"
+msgstr "Kesalahan pemasangan aplikasi: {error}"
+
+#: plinth/modules/backups/views.py:389
+msgid "Repository path is neither empty nor is an existing backups repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:396
+msgid "Repository removed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:471
 msgid "Repository removed. The remote backup itself was not deleted."
 msgstr ""
 
-#: plinth/modules/backups/views.py:304
+#: plinth/modules/backups/views.py:481
 msgid "Unmounting failed!"
 msgstr ""
 
-#: plinth/modules/backups/views.py:313 plinth/modules/backups/views.py:317
+#: plinth/modules/backups/views.py:496 plinth/modules/backups/views.py:500
 msgid "Mounting failed"
 msgstr ""
 
@@ -2114,7 +2190,13 @@ msgid ""
 "the initial setup is currently not supported."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:40
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:36
+msgid ""
+"New users can be registered from any client if public registration is "
+"enabled."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:45
 #, python-format
 msgid ""
 "\n"
@@ -5258,7 +5340,7 @@ msgstr "Bahasa"
 msgid "Log in"
 msgstr ""
 
-#: plinth/templates/clients.html:28
+#: plinth/templates/clients.html:29
 msgid "Client Apps"
 msgstr ""
 
diff --git a/plinth/locale/it/LC_MESSAGES/django.po b/plinth/locale/it/LC_MESSAGES/django.po
index f44744c03..f379af34c 100644
--- a/plinth/locale/it/LC_MESSAGES/django.po
+++ b/plinth/locale/it/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-06-24 19:48-0400\n"
+"POT-Creation-Date: 2019-07-08 17:31-0400\n"
 "PO-Revision-Date: 2019-03-13 15:03+0000\n"
 "Last-Translator: Dietmar <sagen@permondes.de>\n"
 "Language-Team: Italian <https://hosted.weblate.org/projects/freedombox/"
@@ -130,127 +130,156 @@ msgstr ""
 "migliorare la sicurezza specialmente quando si è connessi in una rete locale "
 "ostile."
 
-#: plinth/modules/backups/__init__.py:38 plinth/modules/backups/views.py:50
+#: plinth/modules/backups/__init__.py:41 plinth/modules/backups/views.py:54
 msgid "Backups"
 msgstr "Backup"
 
-#: plinth/modules/backups/__init__.py:41
+#: plinth/modules/backups/__init__.py:44
 msgid "Backups allows creating and managing backup archives."
 msgstr "Backups consente di creare e gestire archivi di backup."
 
-#: plinth/modules/backups/__init__.py:49
+#: plinth/modules/backups/__init__.py:52
 #, python-brace-format
 msgid "{box_name} storage"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:38
+#: plinth/modules/backups/forms.py:47
 #, python-brace-format
 msgid "{app} (No data to backup)"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Included apps"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Apps to include in the backup"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:72
+#: plinth/modules/backups/forms.py:83
 msgid "Select the apps you want to restore"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:85
+#: plinth/modules/backups/forms.py:96
 msgid "Upload File"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:88
+#: plinth/modules/backups/forms.py:98
 msgid "Backup files have to be in .tar.gz format"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:89
+#: plinth/modules/backups/forms.py:99
 msgid "Select the backup file you want to upload"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:94
+#: plinth/modules/backups/forms.py:105
+msgid "Repository path format incorrect."
+msgstr ""
+
+#: plinth/modules/backups/forms.py:112
+#, fuzzy, python-brace-format
+#| msgid "Invalid server name"
+msgid "Invalid username: {username}"
+msgstr "Nome Server Invalido"
+
+#: plinth/modules/backups/forms.py:122
+#, fuzzy, python-brace-format
+msgid "Invalid hostname: {hostname}"
+msgstr "Hostname non valido"
+
+#: plinth/modules/backups/forms.py:126
+#, python-brace-format
+msgid "Invalid directory path: {dir_path}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:132
 msgid "SSH Repository Path"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:95
+#: plinth/modules/backups/forms.py:133
 msgid ""
 "Path of a new or existing repository. Example: <i>user@host:~/path/to/repo/</"
 "i>"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:98
+#: plinth/modules/backups/forms.py:137
 msgid "SSH server password"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:99
+#: plinth/modules/backups/forms.py:138
 msgid ""
 "Password of the SSH Server.<br />SSH key-based authentication is not yet "
 "possible."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:104
+#: plinth/modules/backups/forms.py:142
 msgid "Encryption"
 msgstr "Crittografia"
 
-#: plinth/modules/backups/forms.py:106
+#: plinth/modules/backups/forms.py:143
 msgid ""
 "\"Key in Repository\" means that a password-protected key is stored with the "
 "backup."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:111 plinth/modules/networks/forms.py:304
+#: plinth/modules/backups/forms.py:147 plinth/modules/networks/forms.py:304
 msgid "Passphrase"
 msgstr "Passphrase"
 
-#: plinth/modules/backups/forms.py:112
+#: plinth/modules/backups/forms.py:148
 msgid "Passphrase; Only needed when using encryption."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:117
+#: plinth/modules/backups/forms.py:151
 msgid "Confirm Passphrase"
 msgstr "Conferma la Passphrase"
 
-#: plinth/modules/backups/forms.py:118
+#: plinth/modules/backups/forms.py:151
 msgid "Repeat the passphrase."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:139
+#: plinth/modules/backups/forms.py:162
 msgid "The entered encryption passphrases do not match"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:151
-#, python-format
-msgid "Accessing the remote repository failed. Details: %(err)s"
+#: plinth/modules/backups/forms.py:166
+msgid "Passphrase is needed for encryption."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:45
+#: plinth/modules/backups/forms.py:183
+msgid "Remote backup repository already exists."
+msgstr ""
+
+#: plinth/modules/backups/forms.py:189
+msgid "Select verified SSH public key"
+msgstr ""
+
+#: plinth/modules/backups/repository.py:46
 msgid ""
 "Connection refused - make sure you provided correct credentials and the "
 "server is running."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:51
+#: plinth/modules/backups/repository.py:53
 msgid "Connection refused"
 msgstr "Connessione rifiutata"
 
-#: plinth/modules/backups/repository.py:58
+#: plinth/modules/backups/repository.py:62
 msgid "Repository not found"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:65
+#: plinth/modules/backups/repository.py:70
 msgid "Incorrect encryption passphrase"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:70
+#: plinth/modules/backups/repository.py:76
 msgid "SSH access denied"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups.html:47
-msgid "Existing backups"
+#, fuzzy
+#| msgid "Existing backups"
+msgid "Existing backup locations"
 msgstr "Backups esistenti"
 
 #: plinth/modules/backups/templates/backups.html:57
@@ -304,6 +333,7 @@ msgstr ""
 #: plinth/modules/backups/templates/backups_repository_add.html:45
 #: plinth/modules/backups/templates/backups_repository_remove.html:49
 #: plinth/modules/backups/templates/backups_restore.html:52
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:61
 #: plinth/modules/ikiwiki/templates/ikiwiki_delete.html:47
 #: plinth/modules/monkeysphere/templates/monkeysphere.html:67
 #: plinth/modules/networks/templates/connections_delete.html:41
@@ -326,7 +356,7 @@ msgid ""
 msgstr ""
 
 #: plinth/modules/backups/templates/backups_repository_remove.html:46
-#: plinth/modules/backups/views.py:286
+#: plinth/modules/backups/views.py:461
 msgid "Remove Repository"
 msgstr ""
 
@@ -335,7 +365,7 @@ msgid "Restore data from"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups_restore.html:43
-#: plinth/modules/backups/views.py:186
+#: plinth/modules/backups/views.py:192
 msgid "Restore"
 msgstr ""
 
@@ -371,55 +401,103 @@ msgstr ""
 msgid "Upload file"
 msgstr "Carica file"
 
-#: plinth/modules/backups/views.py:53
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:40
+msgid "How to verify?"
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:45
+msgid ""
+"Run the following command on the SSH host machine. The output should match "
+"one of the provided options. You can also use dsa, ecdsa, ed25519 etc. "
+"instead of rsa, by choosing the corresponding file."
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:59
+msgid "Verify Host"
+msgstr ""
+
+#: plinth/modules/backups/views.py:57
 msgid "Upload"
 msgstr "Carica"
 
-#: plinth/modules/backups/views.py:56 plinth/modules/ikiwiki/views.py:41
+#: plinth/modules/backups/views.py:60 plinth/modules/ikiwiki/views.py:41
 msgid "Create"
 msgstr "Crea"
 
-#: plinth/modules/backups/views.py:84
+#: plinth/modules/backups/views.py:88
 msgid "Archive created."
 msgstr "Archivio creato."
 
-#: plinth/modules/backups/views.py:111
+#: plinth/modules/backups/views.py:117
 msgid "Delete Archive"
 msgstr "Cancella archivio"
 
-#: plinth/modules/backups/views.py:123
+#: plinth/modules/backups/views.py:129
 msgid "Archive deleted."
 msgstr "Archivio cancellato."
 
-#: plinth/modules/backups/views.py:174
+#: plinth/modules/backups/views.py:180
 msgid "Restored files from backup."
 msgstr ""
 
-#: plinth/modules/backups/views.py:198
+#: plinth/modules/backups/views.py:208
 msgid "No backup file found."
 msgstr "Nessun file di backup trovato."
 
-#: plinth/modules/backups/views.py:206
+#: plinth/modules/backups/views.py:216
 msgid "Restore from uploaded file"
 msgstr ""
 
-#: plinth/modules/backups/views.py:260
-msgid "Added new repository."
-msgstr ""
-
-#: plinth/modules/backups/views.py:265
+#: plinth/modules/backups/views.py:272
 msgid "Create remote backup repository"
 msgstr ""
 
-#: plinth/modules/backups/views.py:296
+#: plinth/modules/backups/views.py:292
+msgid "Added new remote SSH repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:315
+msgid "Verify SSH hostkey"
+msgstr ""
+
+#: plinth/modules/backups/views.py:349
+msgid "SSH host already verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:358
+msgid "SSH host verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:382
+msgid "SSH host public key could not be verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:384
+msgid "Authentication to remote server failed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:386
+#, fuzzy
+msgid "Error establishing connection to server: {}"
+msgstr "Errore installazione applicazione: {error}"
+
+#: plinth/modules/backups/views.py:389
+msgid "Repository path is neither empty nor is an existing backups repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:396
+msgid "Repository removed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:471
 msgid "Repository removed. The remote backup itself was not deleted."
 msgstr ""
 
-#: plinth/modules/backups/views.py:304
+#: plinth/modules/backups/views.py:481
 msgid "Unmounting failed!"
 msgstr ""
 
-#: plinth/modules/backups/views.py:313 plinth/modules/backups/views.py:317
+#: plinth/modules/backups/views.py:496 plinth/modules/backups/views.py:500
 msgid "Mounting failed"
 msgstr ""
 
@@ -2358,7 +2436,13 @@ msgstr ""
 "cambio del nome di dominio dopo la prima configurazione, attualmente, non è "
 "supportato."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:40
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:36
+msgid ""
+"New users can be registered from any client if public registration is "
+"enabled."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:45
 #, python-format
 msgid ""
 "\n"
@@ -5593,7 +5677,7 @@ msgstr ""
 msgid "Log in"
 msgstr ""
 
-#: plinth/templates/clients.html:28
+#: plinth/templates/clients.html:29
 msgid "Client Apps"
 msgstr ""
 
diff --git a/plinth/locale/ja/LC_MESSAGES/django.po b/plinth/locale/ja/LC_MESSAGES/django.po
index f613bdad0..61be0db80 100644
--- a/plinth/locale/ja/LC_MESSAGES/django.po
+++ b/plinth/locale/ja/LC_MESSAGES/django.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-06-24 19:48-0400\n"
+"POT-Creation-Date: 2019-07-08 17:31-0400\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -118,127 +118,153 @@ msgid ""
 "network."
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:38 plinth/modules/backups/views.py:50
+#: plinth/modules/backups/__init__.py:41 plinth/modules/backups/views.py:54
 msgid "Backups"
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:41
+#: plinth/modules/backups/__init__.py:44
 msgid "Backups allows creating and managing backup archives."
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:49
+#: plinth/modules/backups/__init__.py:52
 #, python-brace-format
 msgid "{box_name} storage"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:38
+#: plinth/modules/backups/forms.py:47
 #, python-brace-format
 msgid "{app} (No data to backup)"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Included apps"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Apps to include in the backup"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:72
+#: plinth/modules/backups/forms.py:83
 msgid "Select the apps you want to restore"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:85
+#: plinth/modules/backups/forms.py:96
 msgid "Upload File"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:88
+#: plinth/modules/backups/forms.py:98
 msgid "Backup files have to be in .tar.gz format"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:89
+#: plinth/modules/backups/forms.py:99
 msgid "Select the backup file you want to upload"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:94
+#: plinth/modules/backups/forms.py:105
+msgid "Repository path format incorrect."
+msgstr ""
+
+#: plinth/modules/backups/forms.py:112
+#, python-brace-format
+msgid "Invalid username: {username}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:122
+#, python-brace-format
+msgid "Invalid hostname: {hostname}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:126
+#, python-brace-format
+msgid "Invalid directory path: {dir_path}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:132
 msgid "SSH Repository Path"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:95
+#: plinth/modules/backups/forms.py:133
 msgid ""
 "Path of a new or existing repository. Example: <i>user@host:~/path/to/repo/</"
 "i>"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:98
+#: plinth/modules/backups/forms.py:137
 msgid "SSH server password"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:99
+#: plinth/modules/backups/forms.py:138
 msgid ""
 "Password of the SSH Server.<br />SSH key-based authentication is not yet "
 "possible."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:104
+#: plinth/modules/backups/forms.py:142
 msgid "Encryption"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:106
+#: plinth/modules/backups/forms.py:143
 msgid ""
 "\"Key in Repository\" means that a password-protected key is stored with the "
 "backup."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:111 plinth/modules/networks/forms.py:304
+#: plinth/modules/backups/forms.py:147 plinth/modules/networks/forms.py:304
 msgid "Passphrase"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:112
+#: plinth/modules/backups/forms.py:148
 msgid "Passphrase; Only needed when using encryption."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:117
+#: plinth/modules/backups/forms.py:151
 msgid "Confirm Passphrase"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:118
+#: plinth/modules/backups/forms.py:151
 msgid "Repeat the passphrase."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:139
+#: plinth/modules/backups/forms.py:162
 msgid "The entered encryption passphrases do not match"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:151
-#, python-format
-msgid "Accessing the remote repository failed. Details: %(err)s"
+#: plinth/modules/backups/forms.py:166
+msgid "Passphrase is needed for encryption."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:45
+#: plinth/modules/backups/forms.py:183
+msgid "Remote backup repository already exists."
+msgstr ""
+
+#: plinth/modules/backups/forms.py:189
+msgid "Select verified SSH public key"
+msgstr ""
+
+#: plinth/modules/backups/repository.py:46
 msgid ""
 "Connection refused - make sure you provided correct credentials and the "
 "server is running."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:51
+#: plinth/modules/backups/repository.py:53
 msgid "Connection refused"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:58
+#: plinth/modules/backups/repository.py:62
 msgid "Repository not found"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:65
+#: plinth/modules/backups/repository.py:70
 msgid "Incorrect encryption passphrase"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:70
+#: plinth/modules/backups/repository.py:76
 msgid "SSH access denied"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups.html:47
-msgid "Existing backups"
+msgid "Existing backup locations"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups.html:57
@@ -291,6 +317,7 @@ msgstr ""
 #: plinth/modules/backups/templates/backups_repository_add.html:45
 #: plinth/modules/backups/templates/backups_repository_remove.html:49
 #: plinth/modules/backups/templates/backups_restore.html:52
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:61
 #: plinth/modules/ikiwiki/templates/ikiwiki_delete.html:47
 #: plinth/modules/monkeysphere/templates/monkeysphere.html:67
 #: plinth/modules/networks/templates/connections_delete.html:41
@@ -313,7 +340,7 @@ msgid ""
 msgstr ""
 
 #: plinth/modules/backups/templates/backups_repository_remove.html:46
-#: plinth/modules/backups/views.py:286
+#: plinth/modules/backups/views.py:461
 msgid "Remove Repository"
 msgstr ""
 
@@ -322,7 +349,7 @@ msgid "Restore data from"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups_restore.html:43
-#: plinth/modules/backups/views.py:186
+#: plinth/modules/backups/views.py:192
 msgid "Restore"
 msgstr ""
 
@@ -358,55 +385,102 @@ msgstr ""
 msgid "Upload file"
 msgstr ""
 
-#: plinth/modules/backups/views.py:53
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:40
+msgid "How to verify?"
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:45
+msgid ""
+"Run the following command on the SSH host machine. The output should match "
+"one of the provided options. You can also use dsa, ecdsa, ed25519 etc. "
+"instead of rsa, by choosing the corresponding file."
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:59
+msgid "Verify Host"
+msgstr ""
+
+#: plinth/modules/backups/views.py:57
 msgid "Upload"
 msgstr ""
 
-#: plinth/modules/backups/views.py:56 plinth/modules/ikiwiki/views.py:41
+#: plinth/modules/backups/views.py:60 plinth/modules/ikiwiki/views.py:41
 msgid "Create"
 msgstr ""
 
-#: plinth/modules/backups/views.py:84
+#: plinth/modules/backups/views.py:88
 msgid "Archive created."
 msgstr ""
 
-#: plinth/modules/backups/views.py:111
+#: plinth/modules/backups/views.py:117
 msgid "Delete Archive"
 msgstr ""
 
-#: plinth/modules/backups/views.py:123
+#: plinth/modules/backups/views.py:129
 msgid "Archive deleted."
 msgstr ""
 
-#: plinth/modules/backups/views.py:174
+#: plinth/modules/backups/views.py:180
 msgid "Restored files from backup."
 msgstr ""
 
-#: plinth/modules/backups/views.py:198
+#: plinth/modules/backups/views.py:208
 msgid "No backup file found."
 msgstr ""
 
-#: plinth/modules/backups/views.py:206
+#: plinth/modules/backups/views.py:216
 msgid "Restore from uploaded file"
 msgstr ""
 
-#: plinth/modules/backups/views.py:260
-msgid "Added new repository."
-msgstr ""
-
-#: plinth/modules/backups/views.py:265
+#: plinth/modules/backups/views.py:272
 msgid "Create remote backup repository"
 msgstr ""
 
-#: plinth/modules/backups/views.py:296
+#: plinth/modules/backups/views.py:292
+msgid "Added new remote SSH repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:315
+msgid "Verify SSH hostkey"
+msgstr ""
+
+#: plinth/modules/backups/views.py:349
+msgid "SSH host already verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:358
+msgid "SSH host verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:382
+msgid "SSH host public key could not be verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:384
+msgid "Authentication to remote server failed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:386
+msgid "Error establishing connection to server: {}"
+msgstr ""
+
+#: plinth/modules/backups/views.py:389
+msgid "Repository path is neither empty nor is an existing backups repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:396
+msgid "Repository removed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:471
 msgid "Repository removed. The remote backup itself was not deleted."
 msgstr ""
 
-#: plinth/modules/backups/views.py:304
+#: plinth/modules/backups/views.py:481
 msgid "Unmounting failed!"
 msgstr ""
 
-#: plinth/modules/backups/views.py:313 plinth/modules/backups/views.py:317
+#: plinth/modules/backups/views.py:496 plinth/modules/backups/views.py:500
 msgid "Mounting failed"
 msgstr ""
 
@@ -2036,7 +2110,13 @@ msgid ""
 "the initial setup is currently not supported."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:40
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:36
+msgid ""
+"New users can be registered from any client if public registration is "
+"enabled."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:45
 #, python-format
 msgid ""
 "\n"
@@ -5066,7 +5146,7 @@ msgstr ""
 msgid "Log in"
 msgstr ""
 
-#: plinth/templates/clients.html:28
+#: plinth/templates/clients.html:29
 msgid "Client Apps"
 msgstr ""
 
diff --git a/plinth/locale/kn/LC_MESSAGES/django.po b/plinth/locale/kn/LC_MESSAGES/django.po
index f613bdad0..61be0db80 100644
--- a/plinth/locale/kn/LC_MESSAGES/django.po
+++ b/plinth/locale/kn/LC_MESSAGES/django.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-06-24 19:48-0400\n"
+"POT-Creation-Date: 2019-07-08 17:31-0400\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -118,127 +118,153 @@ msgid ""
 "network."
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:38 plinth/modules/backups/views.py:50
+#: plinth/modules/backups/__init__.py:41 plinth/modules/backups/views.py:54
 msgid "Backups"
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:41
+#: plinth/modules/backups/__init__.py:44
 msgid "Backups allows creating and managing backup archives."
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:49
+#: plinth/modules/backups/__init__.py:52
 #, python-brace-format
 msgid "{box_name} storage"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:38
+#: plinth/modules/backups/forms.py:47
 #, python-brace-format
 msgid "{app} (No data to backup)"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Included apps"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Apps to include in the backup"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:72
+#: plinth/modules/backups/forms.py:83
 msgid "Select the apps you want to restore"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:85
+#: plinth/modules/backups/forms.py:96
 msgid "Upload File"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:88
+#: plinth/modules/backups/forms.py:98
 msgid "Backup files have to be in .tar.gz format"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:89
+#: plinth/modules/backups/forms.py:99
 msgid "Select the backup file you want to upload"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:94
+#: plinth/modules/backups/forms.py:105
+msgid "Repository path format incorrect."
+msgstr ""
+
+#: plinth/modules/backups/forms.py:112
+#, python-brace-format
+msgid "Invalid username: {username}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:122
+#, python-brace-format
+msgid "Invalid hostname: {hostname}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:126
+#, python-brace-format
+msgid "Invalid directory path: {dir_path}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:132
 msgid "SSH Repository Path"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:95
+#: plinth/modules/backups/forms.py:133
 msgid ""
 "Path of a new or existing repository. Example: <i>user@host:~/path/to/repo/</"
 "i>"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:98
+#: plinth/modules/backups/forms.py:137
 msgid "SSH server password"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:99
+#: plinth/modules/backups/forms.py:138
 msgid ""
 "Password of the SSH Server.<br />SSH key-based authentication is not yet "
 "possible."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:104
+#: plinth/modules/backups/forms.py:142
 msgid "Encryption"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:106
+#: plinth/modules/backups/forms.py:143
 msgid ""
 "\"Key in Repository\" means that a password-protected key is stored with the "
 "backup."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:111 plinth/modules/networks/forms.py:304
+#: plinth/modules/backups/forms.py:147 plinth/modules/networks/forms.py:304
 msgid "Passphrase"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:112
+#: plinth/modules/backups/forms.py:148
 msgid "Passphrase; Only needed when using encryption."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:117
+#: plinth/modules/backups/forms.py:151
 msgid "Confirm Passphrase"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:118
+#: plinth/modules/backups/forms.py:151
 msgid "Repeat the passphrase."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:139
+#: plinth/modules/backups/forms.py:162
 msgid "The entered encryption passphrases do not match"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:151
-#, python-format
-msgid "Accessing the remote repository failed. Details: %(err)s"
+#: plinth/modules/backups/forms.py:166
+msgid "Passphrase is needed for encryption."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:45
+#: plinth/modules/backups/forms.py:183
+msgid "Remote backup repository already exists."
+msgstr ""
+
+#: plinth/modules/backups/forms.py:189
+msgid "Select verified SSH public key"
+msgstr ""
+
+#: plinth/modules/backups/repository.py:46
 msgid ""
 "Connection refused - make sure you provided correct credentials and the "
 "server is running."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:51
+#: plinth/modules/backups/repository.py:53
 msgid "Connection refused"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:58
+#: plinth/modules/backups/repository.py:62
 msgid "Repository not found"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:65
+#: plinth/modules/backups/repository.py:70
 msgid "Incorrect encryption passphrase"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:70
+#: plinth/modules/backups/repository.py:76
 msgid "SSH access denied"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups.html:47
-msgid "Existing backups"
+msgid "Existing backup locations"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups.html:57
@@ -291,6 +317,7 @@ msgstr ""
 #: plinth/modules/backups/templates/backups_repository_add.html:45
 #: plinth/modules/backups/templates/backups_repository_remove.html:49
 #: plinth/modules/backups/templates/backups_restore.html:52
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:61
 #: plinth/modules/ikiwiki/templates/ikiwiki_delete.html:47
 #: plinth/modules/monkeysphere/templates/monkeysphere.html:67
 #: plinth/modules/networks/templates/connections_delete.html:41
@@ -313,7 +340,7 @@ msgid ""
 msgstr ""
 
 #: plinth/modules/backups/templates/backups_repository_remove.html:46
-#: plinth/modules/backups/views.py:286
+#: plinth/modules/backups/views.py:461
 msgid "Remove Repository"
 msgstr ""
 
@@ -322,7 +349,7 @@ msgid "Restore data from"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups_restore.html:43
-#: plinth/modules/backups/views.py:186
+#: plinth/modules/backups/views.py:192
 msgid "Restore"
 msgstr ""
 
@@ -358,55 +385,102 @@ msgstr ""
 msgid "Upload file"
 msgstr ""
 
-#: plinth/modules/backups/views.py:53
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:40
+msgid "How to verify?"
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:45
+msgid ""
+"Run the following command on the SSH host machine. The output should match "
+"one of the provided options. You can also use dsa, ecdsa, ed25519 etc. "
+"instead of rsa, by choosing the corresponding file."
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:59
+msgid "Verify Host"
+msgstr ""
+
+#: plinth/modules/backups/views.py:57
 msgid "Upload"
 msgstr ""
 
-#: plinth/modules/backups/views.py:56 plinth/modules/ikiwiki/views.py:41
+#: plinth/modules/backups/views.py:60 plinth/modules/ikiwiki/views.py:41
 msgid "Create"
 msgstr ""
 
-#: plinth/modules/backups/views.py:84
+#: plinth/modules/backups/views.py:88
 msgid "Archive created."
 msgstr ""
 
-#: plinth/modules/backups/views.py:111
+#: plinth/modules/backups/views.py:117
 msgid "Delete Archive"
 msgstr ""
 
-#: plinth/modules/backups/views.py:123
+#: plinth/modules/backups/views.py:129
 msgid "Archive deleted."
 msgstr ""
 
-#: plinth/modules/backups/views.py:174
+#: plinth/modules/backups/views.py:180
 msgid "Restored files from backup."
 msgstr ""
 
-#: plinth/modules/backups/views.py:198
+#: plinth/modules/backups/views.py:208
 msgid "No backup file found."
 msgstr ""
 
-#: plinth/modules/backups/views.py:206
+#: plinth/modules/backups/views.py:216
 msgid "Restore from uploaded file"
 msgstr ""
 
-#: plinth/modules/backups/views.py:260
-msgid "Added new repository."
-msgstr ""
-
-#: plinth/modules/backups/views.py:265
+#: plinth/modules/backups/views.py:272
 msgid "Create remote backup repository"
 msgstr ""
 
-#: plinth/modules/backups/views.py:296
+#: plinth/modules/backups/views.py:292
+msgid "Added new remote SSH repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:315
+msgid "Verify SSH hostkey"
+msgstr ""
+
+#: plinth/modules/backups/views.py:349
+msgid "SSH host already verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:358
+msgid "SSH host verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:382
+msgid "SSH host public key could not be verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:384
+msgid "Authentication to remote server failed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:386
+msgid "Error establishing connection to server: {}"
+msgstr ""
+
+#: plinth/modules/backups/views.py:389
+msgid "Repository path is neither empty nor is an existing backups repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:396
+msgid "Repository removed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:471
 msgid "Repository removed. The remote backup itself was not deleted."
 msgstr ""
 
-#: plinth/modules/backups/views.py:304
+#: plinth/modules/backups/views.py:481
 msgid "Unmounting failed!"
 msgstr ""
 
-#: plinth/modules/backups/views.py:313 plinth/modules/backups/views.py:317
+#: plinth/modules/backups/views.py:496 plinth/modules/backups/views.py:500
 msgid "Mounting failed"
 msgstr ""
 
@@ -2036,7 +2110,13 @@ msgid ""
 "the initial setup is currently not supported."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:40
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:36
+msgid ""
+"New users can be registered from any client if public registration is "
+"enabled."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:45
 #, python-format
 msgid ""
 "\n"
@@ -5066,7 +5146,7 @@ msgstr ""
 msgid "Log in"
 msgstr ""
 
-#: plinth/templates/clients.html:28
+#: plinth/templates/clients.html:29
 msgid "Client Apps"
 msgstr ""
 
diff --git a/plinth/locale/lt/LC_MESSAGES/django.po b/plinth/locale/lt/LC_MESSAGES/django.po
index 1b464a995..0262e1f56 100644
--- a/plinth/locale/lt/LC_MESSAGES/django.po
+++ b/plinth/locale/lt/LC_MESSAGES/django.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-06-24 19:48-0400\n"
+"POT-Creation-Date: 2019-07-08 17:31-0400\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -119,127 +119,153 @@ msgid ""
 "network."
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:38 plinth/modules/backups/views.py:50
+#: plinth/modules/backups/__init__.py:41 plinth/modules/backups/views.py:54
 msgid "Backups"
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:41
+#: plinth/modules/backups/__init__.py:44
 msgid "Backups allows creating and managing backup archives."
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:49
+#: plinth/modules/backups/__init__.py:52
 #, python-brace-format
 msgid "{box_name} storage"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:38
+#: plinth/modules/backups/forms.py:47
 #, python-brace-format
 msgid "{app} (No data to backup)"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Included apps"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Apps to include in the backup"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:72
+#: plinth/modules/backups/forms.py:83
 msgid "Select the apps you want to restore"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:85
+#: plinth/modules/backups/forms.py:96
 msgid "Upload File"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:88
+#: plinth/modules/backups/forms.py:98
 msgid "Backup files have to be in .tar.gz format"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:89
+#: plinth/modules/backups/forms.py:99
 msgid "Select the backup file you want to upload"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:94
+#: plinth/modules/backups/forms.py:105
+msgid "Repository path format incorrect."
+msgstr ""
+
+#: plinth/modules/backups/forms.py:112
+#, python-brace-format
+msgid "Invalid username: {username}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:122
+#, python-brace-format
+msgid "Invalid hostname: {hostname}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:126
+#, python-brace-format
+msgid "Invalid directory path: {dir_path}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:132
 msgid "SSH Repository Path"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:95
+#: plinth/modules/backups/forms.py:133
 msgid ""
 "Path of a new or existing repository. Example: <i>user@host:~/path/to/repo/</"
 "i>"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:98
+#: plinth/modules/backups/forms.py:137
 msgid "SSH server password"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:99
+#: plinth/modules/backups/forms.py:138
 msgid ""
 "Password of the SSH Server.<br />SSH key-based authentication is not yet "
 "possible."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:104
+#: plinth/modules/backups/forms.py:142
 msgid "Encryption"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:106
+#: plinth/modules/backups/forms.py:143
 msgid ""
 "\"Key in Repository\" means that a password-protected key is stored with the "
 "backup."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:111 plinth/modules/networks/forms.py:304
+#: plinth/modules/backups/forms.py:147 plinth/modules/networks/forms.py:304
 msgid "Passphrase"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:112
+#: plinth/modules/backups/forms.py:148
 msgid "Passphrase; Only needed when using encryption."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:117
+#: plinth/modules/backups/forms.py:151
 msgid "Confirm Passphrase"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:118
+#: plinth/modules/backups/forms.py:151
 msgid "Repeat the passphrase."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:139
+#: plinth/modules/backups/forms.py:162
 msgid "The entered encryption passphrases do not match"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:151
-#, python-format
-msgid "Accessing the remote repository failed. Details: %(err)s"
+#: plinth/modules/backups/forms.py:166
+msgid "Passphrase is needed for encryption."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:45
+#: plinth/modules/backups/forms.py:183
+msgid "Remote backup repository already exists."
+msgstr ""
+
+#: plinth/modules/backups/forms.py:189
+msgid "Select verified SSH public key"
+msgstr ""
+
+#: plinth/modules/backups/repository.py:46
 msgid ""
 "Connection refused - make sure you provided correct credentials and the "
 "server is running."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:51
+#: plinth/modules/backups/repository.py:53
 msgid "Connection refused"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:58
+#: plinth/modules/backups/repository.py:62
 msgid "Repository not found"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:65
+#: plinth/modules/backups/repository.py:70
 msgid "Incorrect encryption passphrase"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:70
+#: plinth/modules/backups/repository.py:76
 msgid "SSH access denied"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups.html:47
-msgid "Existing backups"
+msgid "Existing backup locations"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups.html:57
@@ -292,6 +318,7 @@ msgstr ""
 #: plinth/modules/backups/templates/backups_repository_add.html:45
 #: plinth/modules/backups/templates/backups_repository_remove.html:49
 #: plinth/modules/backups/templates/backups_restore.html:52
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:61
 #: plinth/modules/ikiwiki/templates/ikiwiki_delete.html:47
 #: plinth/modules/monkeysphere/templates/monkeysphere.html:67
 #: plinth/modules/networks/templates/connections_delete.html:41
@@ -314,7 +341,7 @@ msgid ""
 msgstr ""
 
 #: plinth/modules/backups/templates/backups_repository_remove.html:46
-#: plinth/modules/backups/views.py:286
+#: plinth/modules/backups/views.py:461
 msgid "Remove Repository"
 msgstr ""
 
@@ -323,7 +350,7 @@ msgid "Restore data from"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups_restore.html:43
-#: plinth/modules/backups/views.py:186
+#: plinth/modules/backups/views.py:192
 msgid "Restore"
 msgstr ""
 
@@ -359,55 +386,102 @@ msgstr ""
 msgid "Upload file"
 msgstr ""
 
-#: plinth/modules/backups/views.py:53
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:40
+msgid "How to verify?"
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:45
+msgid ""
+"Run the following command on the SSH host machine. The output should match "
+"one of the provided options. You can also use dsa, ecdsa, ed25519 etc. "
+"instead of rsa, by choosing the corresponding file."
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:59
+msgid "Verify Host"
+msgstr ""
+
+#: plinth/modules/backups/views.py:57
 msgid "Upload"
 msgstr ""
 
-#: plinth/modules/backups/views.py:56 plinth/modules/ikiwiki/views.py:41
+#: plinth/modules/backups/views.py:60 plinth/modules/ikiwiki/views.py:41
 msgid "Create"
 msgstr ""
 
-#: plinth/modules/backups/views.py:84
+#: plinth/modules/backups/views.py:88
 msgid "Archive created."
 msgstr ""
 
-#: plinth/modules/backups/views.py:111
+#: plinth/modules/backups/views.py:117
 msgid "Delete Archive"
 msgstr ""
 
-#: plinth/modules/backups/views.py:123
+#: plinth/modules/backups/views.py:129
 msgid "Archive deleted."
 msgstr ""
 
-#: plinth/modules/backups/views.py:174
+#: plinth/modules/backups/views.py:180
 msgid "Restored files from backup."
 msgstr ""
 
-#: plinth/modules/backups/views.py:198
+#: plinth/modules/backups/views.py:208
 msgid "No backup file found."
 msgstr ""
 
-#: plinth/modules/backups/views.py:206
+#: plinth/modules/backups/views.py:216
 msgid "Restore from uploaded file"
 msgstr ""
 
-#: plinth/modules/backups/views.py:260
-msgid "Added new repository."
-msgstr ""
-
-#: plinth/modules/backups/views.py:265
+#: plinth/modules/backups/views.py:272
 msgid "Create remote backup repository"
 msgstr ""
 
-#: plinth/modules/backups/views.py:296
+#: plinth/modules/backups/views.py:292
+msgid "Added new remote SSH repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:315
+msgid "Verify SSH hostkey"
+msgstr ""
+
+#: plinth/modules/backups/views.py:349
+msgid "SSH host already verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:358
+msgid "SSH host verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:382
+msgid "SSH host public key could not be verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:384
+msgid "Authentication to remote server failed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:386
+msgid "Error establishing connection to server: {}"
+msgstr ""
+
+#: plinth/modules/backups/views.py:389
+msgid "Repository path is neither empty nor is an existing backups repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:396
+msgid "Repository removed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:471
 msgid "Repository removed. The remote backup itself was not deleted."
 msgstr ""
 
-#: plinth/modules/backups/views.py:304
+#: plinth/modules/backups/views.py:481
 msgid "Unmounting failed!"
 msgstr ""
 
-#: plinth/modules/backups/views.py:313 plinth/modules/backups/views.py:317
+#: plinth/modules/backups/views.py:496 plinth/modules/backups/views.py:500
 msgid "Mounting failed"
 msgstr ""
 
@@ -2037,7 +2111,13 @@ msgid ""
 "the initial setup is currently not supported."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:40
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:36
+msgid ""
+"New users can be registered from any client if public registration is "
+"enabled."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:45
 #, python-format
 msgid ""
 "\n"
@@ -5067,7 +5147,7 @@ msgstr ""
 msgid "Log in"
 msgstr ""
 
-#: plinth/templates/clients.html:28
+#: plinth/templates/clients.html:29
 msgid "Client Apps"
 msgstr ""
 
diff --git a/plinth/locale/nb/LC_MESSAGES/django.po b/plinth/locale/nb/LC_MESSAGES/django.po
index 5e4034e5d..a9087b639 100644
--- a/plinth/locale/nb/LC_MESSAGES/django.po
+++ b/plinth/locale/nb/LC_MESSAGES/django.po
@@ -15,7 +15,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: FreedomBox UI\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-06-24 19:48-0400\n"
+"POT-Creation-Date: 2019-07-08 17:31-0400\n"
 "PO-Revision-Date: 2019-06-22 06:01+0000\n"
 "Last-Translator: Petter Reinholdtsen <pere-weblate@hungry.com>\n"
 "Language-Team: Norwegian Bokmål <https://hosted.weblate.org/projects/"
@@ -134,54 +134,77 @@ msgstr ""
 "kan slås av for å bedre sikkerheten, spesielt ved tilkobling til et "
 "fiendtlig/fremmed lokalt nettverk."
 
-#: plinth/modules/backups/__init__.py:38 plinth/modules/backups/views.py:50
+#: plinth/modules/backups/__init__.py:41 plinth/modules/backups/views.py:54
 msgid "Backups"
 msgstr "Sikkerhetskopier"
 
-#: plinth/modules/backups/__init__.py:41
+#: plinth/modules/backups/__init__.py:44
 msgid "Backups allows creating and managing backup archives."
 msgstr ""
 "Sikkerhetskopier tillater opprettelse og behandling av sikkerhetskopiarkiver."
 
-#: plinth/modules/backups/__init__.py:49
+#: plinth/modules/backups/__init__.py:52
 #, python-brace-format
 msgid "{box_name} storage"
 msgstr "{box_name} lager"
 
-#: plinth/modules/backups/forms.py:38
+#: plinth/modules/backups/forms.py:47
 #, python-brace-format
 msgid "{app} (No data to backup)"
 msgstr "{app} (Ingen data å sikkerhetskopiere)"
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Included apps"
 msgstr "Inkluderte programmer"
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Apps to include in the backup"
 msgstr "Programmer å ta med i sikkerhetskopien"
 
-#: plinth/modules/backups/forms.py:72
+#: plinth/modules/backups/forms.py:83
 msgid "Select the apps you want to restore"
 msgstr "Velg app-ene du ønsker å tilbakeføre"
 
-#: plinth/modules/backups/forms.py:85
+#: plinth/modules/backups/forms.py:96
 msgid "Upload File"
 msgstr "Last opp fil"
 
-#: plinth/modules/backups/forms.py:88
+#: plinth/modules/backups/forms.py:98
 msgid "Backup files have to be in .tar.gz format"
 msgstr "Sikkerhetskopifiler må ha .tar.gz-format"
 
-#: plinth/modules/backups/forms.py:89
+#: plinth/modules/backups/forms.py:99
 msgid "Select the backup file you want to upload"
 msgstr "Velg sikkerhetskopiarkivet du ønsker å laste opp"
 
-#: plinth/modules/backups/forms.py:94
+#: plinth/modules/backups/forms.py:105
+#, fuzzy
+#| msgid "Repository not found"
+msgid "Repository path format incorrect."
+msgstr "Finner ikke depot"
+
+#: plinth/modules/backups/forms.py:112
+#, fuzzy, python-brace-format
+#| msgid "Invalid server name"
+msgid "Invalid username: {username}"
+msgstr "Ugyldig tjenernavn"
+
+#: plinth/modules/backups/forms.py:122
+#, fuzzy, python-brace-format
+#| msgid "Invalid hostname"
+msgid "Invalid hostname: {hostname}"
+msgstr "Ugyldig vertsnavn"
+
+#: plinth/modules/backups/forms.py:126
+#, python-brace-format
+msgid "Invalid directory path: {dir_path}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:132
 msgid "SSH Repository Path"
 msgstr "Sti til SSH-depot"
 
-#: plinth/modules/backups/forms.py:95
+#: plinth/modules/backups/forms.py:133
 msgid ""
 "Path of a new or existing repository. Example: <i>user@host:~/path/to/repo/</"
 "i>"
@@ -189,11 +212,11 @@ msgstr ""
 "Sti til et nytt eller eksisterende depot. Eksempel: <i>user@vert:~/sti/til/"
 "depot/</i>"
 
-#: plinth/modules/backups/forms.py:98
+#: plinth/modules/backups/forms.py:137
 msgid "SSH server password"
 msgstr "SSH-tjenermaskinpassord"
 
-#: plinth/modules/backups/forms.py:99
+#: plinth/modules/backups/forms.py:138
 msgid ""
 "Password of the SSH Server.<br />SSH key-based authentication is not yet "
 "possible."
@@ -201,11 +224,11 @@ msgstr ""
 "Passord til SSH-tjeneren.<br />Nøkkelbasert SSH-autentisering er så langt "
 "ikke mulig."
 
-#: plinth/modules/backups/forms.py:104
+#: plinth/modules/backups/forms.py:142
 msgid "Encryption"
 msgstr "Kryptering"
 
-#: plinth/modules/backups/forms.py:106
+#: plinth/modules/backups/forms.py:143
 msgid ""
 "\"Key in Repository\" means that a password-protected key is stored with the "
 "backup."
@@ -213,32 +236,43 @@ msgstr ""
 "«Nøkkel i depot» betyr at en passordbeskyttet nøkkel er lagret i "
 "sikkerhetskopien."
 
-#: plinth/modules/backups/forms.py:111 plinth/modules/networks/forms.py:304
+#: plinth/modules/backups/forms.py:147 plinth/modules/networks/forms.py:304
 msgid "Passphrase"
 msgstr "Passfrase"
 
-#: plinth/modules/backups/forms.py:112
+#: plinth/modules/backups/forms.py:148
 msgid "Passphrase; Only needed when using encryption."
 msgstr "Passfrase; Trengs kun når det brukes kryptering."
 
-#: plinth/modules/backups/forms.py:117
+#: plinth/modules/backups/forms.py:151
 msgid "Confirm Passphrase"
 msgstr "Bekreft passfrase"
 
-#: plinth/modules/backups/forms.py:118
+#: plinth/modules/backups/forms.py:151
 msgid "Repeat the passphrase."
 msgstr "Gjenta passfrase."
 
-#: plinth/modules/backups/forms.py:139
+#: plinth/modules/backups/forms.py:162
 msgid "The entered encryption passphrases do not match"
 msgstr "De innskrevne krypteringspassfrasene stemmer ikke overens"
 
-#: plinth/modules/backups/forms.py:151
-#, python-format
-msgid "Accessing the remote repository failed. Details: %(err)s"
-msgstr "Fikk ikke tilgang til fjerndepoet.  Detaljer: %(err)s"
+#: plinth/modules/backups/forms.py:166
+#, fuzzy
+#| msgid "Passphrase; Only needed when using encryption."
+msgid "Passphrase is needed for encryption."
+msgstr "Passfrase; Trengs kun når det brukes kryptering."
 
-#: plinth/modules/backups/repository.py:45
+#: plinth/modules/backups/forms.py:183
+#, fuzzy
+#| msgid "Create remote backup repository"
+msgid "Remote backup repository already exists."
+msgstr "Opprett fjerndepot for sikkerhetskopi"
+
+#: plinth/modules/backups/forms.py:189
+msgid "Select verified SSH public key"
+msgstr ""
+
+#: plinth/modules/backups/repository.py:46
 msgid ""
 "Connection refused - make sure you provided correct credentials and the "
 "server is running."
@@ -246,24 +280,26 @@ msgstr ""
 "Oppkobling avvist - sikre at du oppga korrekte innloggingsinformasjon og at "
 "tjenermaskinen kjører."
 
-#: plinth/modules/backups/repository.py:51
+#: plinth/modules/backups/repository.py:53
 msgid "Connection refused"
 msgstr "Oppkobling avvist"
 
-#: plinth/modules/backups/repository.py:58
+#: plinth/modules/backups/repository.py:62
 msgid "Repository not found"
 msgstr "Finner ikke depot"
 
-#: plinth/modules/backups/repository.py:65
+#: plinth/modules/backups/repository.py:70
 msgid "Incorrect encryption passphrase"
 msgstr "Feil krypteringspassfrase"
 
-#: plinth/modules/backups/repository.py:70
+#: plinth/modules/backups/repository.py:76
 msgid "SSH access denied"
 msgstr "Nektes SSH-tilgang"
 
 #: plinth/modules/backups/templates/backups.html:47
-msgid "Existing backups"
+#, fuzzy
+#| msgid "Existing backups"
+msgid "Existing backup locations"
 msgstr "Eksisterende sikkerhetskopier"
 
 #: plinth/modules/backups/templates/backups.html:57
@@ -319,6 +355,7 @@ msgstr "Opprett depot"
 #: plinth/modules/backups/templates/backups_repository_add.html:45
 #: plinth/modules/backups/templates/backups_repository_remove.html:49
 #: plinth/modules/backups/templates/backups_restore.html:52
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:61
 #: plinth/modules/ikiwiki/templates/ikiwiki_delete.html:47
 #: plinth/modules/monkeysphere/templates/monkeysphere.html:67
 #: plinth/modules/networks/templates/connections_delete.html:41
@@ -347,7 +384,7 @@ msgstr ""
 "    "
 
 #: plinth/modules/backups/templates/backups_repository_remove.html:46
-#: plinth/modules/backups/views.py:286
+#: plinth/modules/backups/views.py:461
 msgid "Remove Repository"
 msgstr "Fjern depot"
 
@@ -356,7 +393,7 @@ msgid "Restore data from"
 msgstr "Gjenopprett data fra"
 
 #: plinth/modules/backups/templates/backups_restore.html:43
-#: plinth/modules/backups/views.py:186
+#: plinth/modules/backups/views.py:192
 msgid "Restore"
 msgstr "Gjenopprett"
 
@@ -400,55 +437,108 @@ msgstr ""
 msgid "Upload file"
 msgstr "Last opp fil"
 
-#: plinth/modules/backups/views.py:53
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:40
+msgid "How to verify?"
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:45
+msgid ""
+"Run the following command on the SSH host machine. The output should match "
+"one of the provided options. You can also use dsa, ecdsa, ed25519 etc. "
+"instead of rsa, by choosing the corresponding file."
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:59
+msgid "Verify Host"
+msgstr ""
+
+#: plinth/modules/backups/views.py:57
 msgid "Upload"
 msgstr "Last opp"
 
-#: plinth/modules/backups/views.py:56 plinth/modules/ikiwiki/views.py:41
+#: plinth/modules/backups/views.py:60 plinth/modules/ikiwiki/views.py:41
 msgid "Create"
 msgstr "Opprett"
 
-#: plinth/modules/backups/views.py:84
+#: plinth/modules/backups/views.py:88
 msgid "Archive created."
 msgstr "Arkiv opprettet."
 
-#: plinth/modules/backups/views.py:111
+#: plinth/modules/backups/views.py:117
 msgid "Delete Archive"
 msgstr "Slett arkiv"
 
-#: plinth/modules/backups/views.py:123
+#: plinth/modules/backups/views.py:129
 msgid "Archive deleted."
 msgstr "Arkiv slettet."
 
-#: plinth/modules/backups/views.py:174
+#: plinth/modules/backups/views.py:180
 msgid "Restored files from backup."
 msgstr "Gjenopprettede filer fra sikkerhetskopi."
 
-#: plinth/modules/backups/views.py:198
+#: plinth/modules/backups/views.py:208
 msgid "No backup file found."
 msgstr "Fant ingen sikkerhetskopifiler."
 
-#: plinth/modules/backups/views.py:206
+#: plinth/modules/backups/views.py:216
 msgid "Restore from uploaded file"
 msgstr "Gjenopprett fra opplastet fil"
 
-#: plinth/modules/backups/views.py:260
-msgid "Added new repository."
-msgstr "Legg til nytt depot."
-
-#: plinth/modules/backups/views.py:265
+#: plinth/modules/backups/views.py:272
 msgid "Create remote backup repository"
 msgstr "Opprett fjerndepot for sikkerhetskopi"
 
-#: plinth/modules/backups/views.py:296
+#: plinth/modules/backups/views.py:292
+#, fuzzy
+#| msgid "Added new repository."
+msgid "Added new remote SSH repository."
+msgstr "Legg til nytt depot."
+
+#: plinth/modules/backups/views.py:315
+msgid "Verify SSH hostkey"
+msgstr ""
+
+#: plinth/modules/backups/views.py:349
+msgid "SSH host already verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:358
+msgid "SSH host verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:382
+msgid "SSH host public key could not be verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:384
+msgid "Authentication to remote server failed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:386
+#, fuzzy
+#| msgid "Error installing application: {error}"
+msgid "Error establishing connection to server: {}"
+msgstr "Feil ved programinstallering: {error}"
+
+#: plinth/modules/backups/views.py:389
+msgid "Repository path is neither empty nor is an existing backups repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:396
+#, fuzzy
+#| msgid "Repository not found"
+msgid "Repository removed."
+msgstr "Finner ikke depot"
+
+#: plinth/modules/backups/views.py:471
 msgid "Repository removed. The remote backup itself was not deleted."
 msgstr "Fjerne depotet.  Fjernlagrede sikkerhetskopier ble ikke slettet."
 
-#: plinth/modules/backups/views.py:304
+#: plinth/modules/backups/views.py:481
 msgid "Unmounting failed!"
 msgstr "Klarte ikke å avmontere!"
 
-#: plinth/modules/backups/views.py:313 plinth/modules/backups/views.py:317
+#: plinth/modules/backups/views.py:496 plinth/modules/backups/views.py:500
 msgid "Mounting failed"
 msgstr "Montering feilet"
 
@@ -2362,7 +2452,13 @@ msgstr ""
 "se slik ut <em>@username:%(domain_name)s</em>. Endring av domenenavnet etter "
 "det første oppsettet støttes ikke for øyeblikket."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:40
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:36
+msgid ""
+"New users can be registered from any client if public registration is "
+"enabled."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:45
 #, python-format
 msgid ""
 "\n"
@@ -5808,7 +5904,7 @@ msgstr "Velg språk"
 msgid "Log in"
 msgstr "Logg inn"
 
-#: plinth/templates/clients.html:28
+#: plinth/templates/clients.html:29
 msgid "Client Apps"
 msgstr "Klientprogrammer"
 
@@ -6024,6 +6120,9 @@ msgstr "Programmet er deaktivert"
 msgid "Gujarati"
 msgstr "Gujarati"
 
+#~ msgid "Accessing the remote repository failed. Details: %(err)s"
+#~ msgstr "Fikk ikke tilgang til fjerndepoet.  Detaljer: %(err)s"
+
 #~ msgid "Tor Anonymity Network"
 #~ msgstr "Tor anonymitetsnettverk"
 
diff --git a/plinth/locale/nl/LC_MESSAGES/django.po b/plinth/locale/nl/LC_MESSAGES/django.po
index f60c48463..46ad2f5e0 100644
--- a/plinth/locale/nl/LC_MESSAGES/django.po
+++ b/plinth/locale/nl/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-06-24 19:48-0400\n"
+"POT-Creation-Date: 2019-07-08 17:31-0400\n"
 "PO-Revision-Date: 2019-05-07 20:48+0000\n"
 "Last-Translator: Karel Trachet <karel@trachet.eu>\n"
 "Language-Team: Dutch <https://hosted.weblate.org/projects/freedombox/plinth/"
@@ -129,141 +129,171 @@ msgstr ""
 "uitgeschakeld worden om de veiligheid te verhogen, zeker in een onbekend en "
 "mogelijk vijandig lokaal netwerk."
 
-#: plinth/modules/backups/__init__.py:38 plinth/modules/backups/views.py:50
+#: plinth/modules/backups/__init__.py:41 plinth/modules/backups/views.py:54
 msgid "Backups"
 msgstr "Back-ups"
 
-#: plinth/modules/backups/__init__.py:41
+#: plinth/modules/backups/__init__.py:44
 msgid "Backups allows creating and managing backup archives."
 msgstr "Met back-ups kunt u back-uparchieven maken en beheren."
 
-#: plinth/modules/backups/__init__.py:49
+#: plinth/modules/backups/__init__.py:52
 #, python-brace-format
 msgid "{box_name} storage"
 msgstr "{box_name} opslag"
 
-#: plinth/modules/backups/forms.py:38
+#: plinth/modules/backups/forms.py:47
 #, python-brace-format
 msgid "{app} (No data to backup)"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Included apps"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Apps to include in the backup"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:72
+#: plinth/modules/backups/forms.py:83
 #, fuzzy
 #| msgid "The subdomain you want to register"
 msgid "Select the apps you want to restore"
 msgstr "Het subdomein dat u wilt registreren"
 
-#: plinth/modules/backups/forms.py:85
+#: plinth/modules/backups/forms.py:96
 msgid "Upload File"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:88
+#: plinth/modules/backups/forms.py:98
 msgid "Backup files have to be in .tar.gz format"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:89
+#: plinth/modules/backups/forms.py:99
 msgid "Select the backup file you want to upload"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:94
+#: plinth/modules/backups/forms.py:105
+#, fuzzy
+#| msgid "packages not found"
+msgid "Repository path format incorrect."
+msgstr "pakketten niet gevonden"
+
+#: plinth/modules/backups/forms.py:112
+#, fuzzy, python-brace-format
+#| msgid "Invalid server name"
+msgid "Invalid username: {username}"
+msgstr "Foute servernaam"
+
+#: plinth/modules/backups/forms.py:122
+#, fuzzy, python-brace-format
+#| msgid "Invalid hostname"
+msgid "Invalid hostname: {hostname}"
+msgstr "Foutieve hostnaam"
+
+#: plinth/modules/backups/forms.py:126
+#, python-brace-format
+msgid "Invalid directory path: {dir_path}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:132
 msgid "SSH Repository Path"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:95
+#: plinth/modules/backups/forms.py:133
 msgid ""
 "Path of a new or existing repository. Example: <i>user@host:~/path/to/repo/</"
 "i>"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:98
+#: plinth/modules/backups/forms.py:137
 #, fuzzy
 #| msgid "Save Password"
 msgid "SSH server password"
 msgstr "Wachtwoord Opslaan"
 
-#: plinth/modules/backups/forms.py:99
+#: plinth/modules/backups/forms.py:138
 msgid ""
 "Password of the SSH Server.<br />SSH key-based authentication is not yet "
 "possible."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:104
+#: plinth/modules/backups/forms.py:142
 #, fuzzy
 #| msgid "Description"
 msgid "Encryption"
 msgstr "Omschrijving"
 
-#: plinth/modules/backups/forms.py:106
+#: plinth/modules/backups/forms.py:143
 msgid ""
 "\"Key in Repository\" means that a password-protected key is stored with the "
 "backup."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:111 plinth/modules/networks/forms.py:304
+#: plinth/modules/backups/forms.py:147 plinth/modules/networks/forms.py:304
 msgid "Passphrase"
 msgstr "Wachtwoordzin"
 
-#: plinth/modules/backups/forms.py:112
+#: plinth/modules/backups/forms.py:148
 msgid "Passphrase; Only needed when using encryption."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:117
+#: plinth/modules/backups/forms.py:151
 #, fuzzy
 #| msgid "Passphrase"
 msgid "Confirm Passphrase"
 msgstr "Wachtwoordzin"
 
-#: plinth/modules/backups/forms.py:118
+#: plinth/modules/backups/forms.py:151
 msgid "Repeat the passphrase."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:139
+#: plinth/modules/backups/forms.py:162
 msgid "The entered encryption passphrases do not match"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:151
-#, python-format
-msgid "Accessing the remote repository failed. Details: %(err)s"
+#: plinth/modules/backups/forms.py:166
+msgid "Passphrase is needed for encryption."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:45
+#: plinth/modules/backups/forms.py:183
+msgid "Remote backup repository already exists."
+msgstr ""
+
+#: plinth/modules/backups/forms.py:189
+msgid "Select verified SSH public key"
+msgstr ""
+
+#: plinth/modules/backups/repository.py:46
 msgid ""
 "Connection refused - make sure you provided correct credentials and the "
 "server is running."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:51
+#: plinth/modules/backups/repository.py:53
 #, fuzzy
 #| msgid "Connection Type"
 msgid "Connection refused"
 msgstr "Verbindingssoort"
 
-#: plinth/modules/backups/repository.py:58
+#: plinth/modules/backups/repository.py:62
 #, fuzzy
 #| msgid "packages not found"
 msgid "Repository not found"
 msgstr "pakketten niet gevonden"
 
-#: plinth/modules/backups/repository.py:65
+#: plinth/modules/backups/repository.py:70
 msgid "Incorrect encryption passphrase"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:70
+#: plinth/modules/backups/repository.py:76
 msgid "SSH access denied"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups.html:47
 #, fuzzy
 #| msgid "Existing custom services"
-msgid "Existing backups"
+msgid "Existing backup locations"
 msgstr "Bestaande aangepaste diensten"
 
 #: plinth/modules/backups/templates/backups.html:57
@@ -322,6 +352,7 @@ msgstr "Nieuwe gebruiker registreren"
 #: plinth/modules/backups/templates/backups_repository_add.html:45
 #: plinth/modules/backups/templates/backups_repository_remove.html:49
 #: plinth/modules/backups/templates/backups_restore.html:52
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:61
 #: plinth/modules/ikiwiki/templates/ikiwiki_delete.html:47
 #: plinth/modules/monkeysphere/templates/monkeysphere.html:67
 #: plinth/modules/networks/templates/connections_delete.html:41
@@ -344,7 +375,7 @@ msgid ""
 msgstr ""
 
 #: plinth/modules/backups/templates/backups_repository_remove.html:46
-#: plinth/modules/backups/views.py:286
+#: plinth/modules/backups/views.py:461
 msgid "Remove Repository"
 msgstr ""
 
@@ -355,7 +386,7 @@ msgid "Restore data from"
 msgstr "Welkom bij %(box_name)s!"
 
 #: plinth/modules/backups/templates/backups_restore.html:43
-#: plinth/modules/backups/views.py:186
+#: plinth/modules/backups/views.py:192
 #, fuzzy
 #| msgid "reStore"
 msgid "Restore"
@@ -397,61 +428,112 @@ msgstr ""
 msgid "Upload file"
 msgstr "Download mijn profiel"
 
-#: plinth/modules/backups/views.py:53
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:40
+msgid "How to verify?"
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:45
+msgid ""
+"Run the following command on the SSH host machine. The output should match "
+"one of the provided options. You can also use dsa, ecdsa, ed25519 etc. "
+"instead of rsa, by choosing the corresponding file."
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:59
+msgid "Verify Host"
+msgstr ""
+
+#: plinth/modules/backups/views.py:57
 #, fuzzy
 #| msgid "Download my profile"
 msgid "Upload"
 msgstr "Download mijn profiel"
 
-#: plinth/modules/backups/views.py:56 plinth/modules/ikiwiki/views.py:41
+#: plinth/modules/backups/views.py:60 plinth/modules/ikiwiki/views.py:41
 msgid "Create"
 msgstr "Maak"
 
-#: plinth/modules/backups/views.py:84
+#: plinth/modules/backups/views.py:88
 msgid "Archive created."
 msgstr "Archief aangemaakt."
 
-#: plinth/modules/backups/views.py:111
+#: plinth/modules/backups/views.py:117
 msgid "Delete Archive"
 msgstr "Archief verwijderen"
 
-#: plinth/modules/backups/views.py:123
+#: plinth/modules/backups/views.py:129
 msgid "Archive deleted."
 msgstr "Archief verwijderd."
 
-#: plinth/modules/backups/views.py:174
+#: plinth/modules/backups/views.py:180
 msgid "Restored files from backup."
 msgstr ""
 
-#: plinth/modules/backups/views.py:198
+#: plinth/modules/backups/views.py:208
 #, fuzzy
 #| msgid "Name for new backup archive."
 msgid "No backup file found."
 msgstr "Naam voor nieuw back-uparchief."
 
-#: plinth/modules/backups/views.py:206
+#: plinth/modules/backups/views.py:216
 msgid "Restore from uploaded file"
 msgstr ""
 
-#: plinth/modules/backups/views.py:260
-#, fuzzy
-#| msgid "Add new introducer"
-msgid "Added new repository."
-msgstr "Nieuwe introduceerder toevoegen"
-
-#: plinth/modules/backups/views.py:265
+#: plinth/modules/backups/views.py:272
 msgid "Create remote backup repository"
 msgstr ""
 
-#: plinth/modules/backups/views.py:296
+#: plinth/modules/backups/views.py:292
+#, fuzzy
+#| msgid "Add new introducer"
+msgid "Added new remote SSH repository."
+msgstr "Nieuwe introduceerder toevoegen"
+
+#: plinth/modules/backups/views.py:315
+msgid "Verify SSH hostkey"
+msgstr ""
+
+#: plinth/modules/backups/views.py:349
+msgid "SSH host already verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:358
+msgid "SSH host verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:382
+msgid "SSH host public key could not be verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:384
+msgid "Authentication to remote server failed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:386
+#, fuzzy
+#| msgid "Error installing application: {error}"
+msgid "Error establishing connection to server: {}"
+msgstr "Fout bij het installeren van de toepassing: {error}"
+
+#: plinth/modules/backups/views.py:389
+msgid "Repository path is neither empty nor is an existing backups repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:396
+#, fuzzy
+#| msgid "packages not found"
+msgid "Repository removed."
+msgstr "pakketten niet gevonden"
+
+#: plinth/modules/backups/views.py:471
 msgid "Repository removed. The remote backup itself was not deleted."
 msgstr ""
 
-#: plinth/modules/backups/views.py:304
+#: plinth/modules/backups/views.py:481
 msgid "Unmounting failed!"
 msgstr ""
 
-#: plinth/modules/backups/views.py:313 plinth/modules/backups/views.py:317
+#: plinth/modules/backups/views.py:496 plinth/modules/backups/views.py:500
 msgid "Mounting failed"
 msgstr ""
 
@@ -2453,7 +2535,13 @@ msgstr ""
 "%(domain_name)s</em>. Het veranderen van de domeinnaam na de eerste "
 "configuratie wordt op het moment niet ondersteund."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:40
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:36
+msgid ""
+"New users can be registered from any client if public registration is "
+"enabled."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:45
 #, python-format
 msgid ""
 "\n"
@@ -5960,7 +6048,7 @@ msgstr "Selecteer taal"
 msgid "Log in"
 msgstr "Aanmelden"
 
-#: plinth/templates/clients.html:28
+#: plinth/templates/clients.html:29
 msgid "Client Apps"
 msgstr "Cliënttoepassingen"
 
diff --git a/plinth/locale/pl/LC_MESSAGES/django.po b/plinth/locale/pl/LC_MESSAGES/django.po
index 1a53a713d..088e518be 100644
--- a/plinth/locale/pl/LC_MESSAGES/django.po
+++ b/plinth/locale/pl/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-06-24 19:48-0400\n"
+"POT-Creation-Date: 2019-07-08 17:31-0400\n"
 "PO-Revision-Date: 2019-04-30 14:37+0000\n"
 "Last-Translator: Radek Pasiok <rpasiok@gmail.com>\n"
 "Language-Team: Polish <https://hosted.weblate.org/projects/freedombox/plinth/"
@@ -127,54 +127,77 @@ msgstr ""
 "Wykrywanie usług działą tylko w sieci lokalnej i może zistać wyłączone aby "
 "poprawić bezpieczeństwo, szczególnie gdy podłączony do nieprzyjaznych sieci."
 
-#: plinth/modules/backups/__init__.py:38 plinth/modules/backups/views.py:50
+#: plinth/modules/backups/__init__.py:41 plinth/modules/backups/views.py:54
 msgid "Backups"
 msgstr "Kopie zapasowe"
 
-#: plinth/modules/backups/__init__.py:41
+#: plinth/modules/backups/__init__.py:44
 msgid "Backups allows creating and managing backup archives."
 msgstr "Tworzenie i zarządzanie archiwami kopii zapasowych."
 
-#: plinth/modules/backups/__init__.py:49
+#: plinth/modules/backups/__init__.py:52
 #, fuzzy, python-brace-format
 #| msgid "{box_name} Manual"
 msgid "{box_name} storage"
 msgstr "{box_name} Podręcznik"
 
-#: plinth/modules/backups/forms.py:38
+#: plinth/modules/backups/forms.py:47
 #, python-brace-format
 msgid "{app} (No data to backup)"
 msgstr "{app} (Brak danych do utworzenia kopii zapasowej)"
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Included apps"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Apps to include in the backup"
 msgstr "Aplikacje uwzględniane w kopii zapasowej"
 
-#: plinth/modules/backups/forms.py:72
+#: plinth/modules/backups/forms.py:83
 msgid "Select the apps you want to restore"
 msgstr "Zaznacz aplikacje do odtworzenia"
 
-#: plinth/modules/backups/forms.py:85
+#: plinth/modules/backups/forms.py:96
 msgid "Upload File"
 msgstr "Prześlij plik"
 
-#: plinth/modules/backups/forms.py:88
+#: plinth/modules/backups/forms.py:98
 msgid "Backup files have to be in .tar.gz format"
 msgstr "Pliki kopii zapasowej muszą mieć format .tar.gz"
 
-#: plinth/modules/backups/forms.py:89
+#: plinth/modules/backups/forms.py:99
 msgid "Select the backup file you want to upload"
 msgstr "Zaznacz plik kopii zapasowej do przesłania"
 
-#: plinth/modules/backups/forms.py:94
+#: plinth/modules/backups/forms.py:105
+#, fuzzy
+#| msgid "Repository not found"
+msgid "Repository path format incorrect."
+msgstr "Nie odnaleziono repozytorium"
+
+#: plinth/modules/backups/forms.py:112
+#, fuzzy, python-brace-format
+#| msgid "Invalid server name"
+msgid "Invalid username: {username}"
+msgstr "Niewłaściwa nazwa użytkownika"
+
+#: plinth/modules/backups/forms.py:122
+#, fuzzy, python-brace-format
+#| msgid "Invalid hostname"
+msgid "Invalid hostname: {hostname}"
+msgstr "Niewłaściwa nazwa hosta"
+
+#: plinth/modules/backups/forms.py:126
+#, python-brace-format
+msgid "Invalid directory path: {dir_path}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:132
 msgid "SSH Repository Path"
 msgstr "Ścieżka repozytorium SSH"
 
-#: plinth/modules/backups/forms.py:95
+#: plinth/modules/backups/forms.py:133
 msgid ""
 "Path of a new or existing repository. Example: <i>user@host:~/path/to/repo/</"
 "i>"
@@ -182,11 +205,11 @@ msgstr ""
 "Ścieżka nowego lub istniejącego repozytorium, np.: <i>user@host:~/sciezka/do/"
 "repo/</i>"
 
-#: plinth/modules/backups/forms.py:98
+#: plinth/modules/backups/forms.py:137
 msgid "SSH server password"
 msgstr "Hasło do serwera SSH"
 
-#: plinth/modules/backups/forms.py:99
+#: plinth/modules/backups/forms.py:138
 msgid ""
 "Password of the SSH Server.<br />SSH key-based authentication is not yet "
 "possible."
@@ -194,11 +217,11 @@ msgstr ""
 "Hasło do serwera SSH.<br />Autoryzacja z użyciem klucza SSH nie jest jeszcze "
 "możliwa."
 
-#: plinth/modules/backups/forms.py:104
+#: plinth/modules/backups/forms.py:142
 msgid "Encryption"
 msgstr "Szyfrowanie"
 
-#: plinth/modules/backups/forms.py:106
+#: plinth/modules/backups/forms.py:143
 msgid ""
 "\"Key in Repository\" means that a password-protected key is stored with the "
 "backup."
@@ -206,33 +229,43 @@ msgstr ""
 "\"Klucz w repozytorium\" oznacza, że chroniony hasłem klucz jest "
 "przechowywany w kopii zapasowej."
 
-#: plinth/modules/backups/forms.py:111 plinth/modules/networks/forms.py:304
+#: plinth/modules/backups/forms.py:147 plinth/modules/networks/forms.py:304
 msgid "Passphrase"
 msgstr "Hasło"
 
-#: plinth/modules/backups/forms.py:112
+#: plinth/modules/backups/forms.py:148
 msgid "Passphrase; Only needed when using encryption."
 msgstr "Hasło; Potrzebne tylko przy szyfrowaniu."
 
-#: plinth/modules/backups/forms.py:117
+#: plinth/modules/backups/forms.py:151
 msgid "Confirm Passphrase"
 msgstr "Potwierdź hasło"
 
-#: plinth/modules/backups/forms.py:118
+#: plinth/modules/backups/forms.py:151
 msgid "Repeat the passphrase."
 msgstr "Powtórz hasło."
 
-#: plinth/modules/backups/forms.py:139
+#: plinth/modules/backups/forms.py:162
 msgid "The entered encryption passphrases do not match"
 msgstr "Wprowadzone hasła nie są identyczne"
 
-#: plinth/modules/backups/forms.py:151
-#, python-format
-msgid "Accessing the remote repository failed. Details: %(err)s"
-msgstr ""
-"Nie powiodło się połączenie ze zdalnym repozytorium. Szczegóły: %(err)s"
+#: plinth/modules/backups/forms.py:166
+#, fuzzy
+#| msgid "Passphrase; Only needed when using encryption."
+msgid "Passphrase is needed for encryption."
+msgstr "Hasło; Potrzebne tylko przy szyfrowaniu."
 
-#: plinth/modules/backups/repository.py:45
+#: plinth/modules/backups/forms.py:183
+#, fuzzy
+#| msgid "Create remote backup repository"
+msgid "Remote backup repository already exists."
+msgstr "Utwórz zdalne repozytorium kopii zapasowych"
+
+#: plinth/modules/backups/forms.py:189
+msgid "Select verified SSH public key"
+msgstr ""
+
+#: plinth/modules/backups/repository.py:46
 msgid ""
 "Connection refused - make sure you provided correct credentials and the "
 "server is running."
@@ -240,24 +273,26 @@ msgstr ""
 "Odmowa dostępu - upewnij się, czy wprowadziłeś poprawne dane logowania i czy "
 "serwer działa."
 
-#: plinth/modules/backups/repository.py:51
+#: plinth/modules/backups/repository.py:53
 msgid "Connection refused"
 msgstr "Odmowa dostępu"
 
-#: plinth/modules/backups/repository.py:58
+#: plinth/modules/backups/repository.py:62
 msgid "Repository not found"
 msgstr "Nie odnaleziono repozytorium"
 
-#: plinth/modules/backups/repository.py:65
+#: plinth/modules/backups/repository.py:70
 msgid "Incorrect encryption passphrase"
 msgstr "Niepoprawne hasło szyfrowania"
 
-#: plinth/modules/backups/repository.py:70
+#: plinth/modules/backups/repository.py:76
 msgid "SSH access denied"
 msgstr "Odmowa dostępu SSH"
 
 #: plinth/modules/backups/templates/backups.html:47
-msgid "Existing backups"
+#, fuzzy
+#| msgid "Existing backups"
+msgid "Existing backup locations"
 msgstr "Istniejące kopie zapasowe"
 
 #: plinth/modules/backups/templates/backups.html:57
@@ -313,6 +348,7 @@ msgstr "Utwórz repozytorium"
 #: plinth/modules/backups/templates/backups_repository_add.html:45
 #: plinth/modules/backups/templates/backups_repository_remove.html:49
 #: plinth/modules/backups/templates/backups_restore.html:52
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:61
 #: plinth/modules/ikiwiki/templates/ikiwiki_delete.html:47
 #: plinth/modules/monkeysphere/templates/monkeysphere.html:67
 #: plinth/modules/networks/templates/connections_delete.html:41
@@ -341,7 +377,7 @@ msgstr ""
 "    "
 
 #: plinth/modules/backups/templates/backups_repository_remove.html:46
-#: plinth/modules/backups/views.py:286
+#: plinth/modules/backups/views.py:461
 msgid "Remove Repository"
 msgstr "Usuń repozytorium"
 
@@ -350,7 +386,7 @@ msgid "Restore data from"
 msgstr "Odtwórz dane z"
 
 #: plinth/modules/backups/templates/backups_restore.html:43
-#: plinth/modules/backups/views.py:186
+#: plinth/modules/backups/views.py:192
 msgid "Restore"
 msgstr "Odtwórz"
 
@@ -394,57 +430,110 @@ msgstr ""
 msgid "Upload file"
 msgstr "Prześlij plik"
 
-#: plinth/modules/backups/views.py:53
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:40
+msgid "How to verify?"
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:45
+msgid ""
+"Run the following command on the SSH host machine. The output should match "
+"one of the provided options. You can also use dsa, ecdsa, ed25519 etc. "
+"instead of rsa, by choosing the corresponding file."
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:59
+msgid "Verify Host"
+msgstr ""
+
+#: plinth/modules/backups/views.py:57
 msgid "Upload"
 msgstr "Prześlij"
 
-#: plinth/modules/backups/views.py:56 plinth/modules/ikiwiki/views.py:41
+#: plinth/modules/backups/views.py:60 plinth/modules/ikiwiki/views.py:41
 msgid "Create"
 msgstr "Utwórz"
 
-#: plinth/modules/backups/views.py:84
+#: plinth/modules/backups/views.py:88
 msgid "Archive created."
 msgstr "Archiwum zostało utworzone."
 
-#: plinth/modules/backups/views.py:111
+#: plinth/modules/backups/views.py:117
 msgid "Delete Archive"
 msgstr "Usuń archiwum"
 
-#: plinth/modules/backups/views.py:123
+#: plinth/modules/backups/views.py:129
 msgid "Archive deleted."
 msgstr "Archiwum zostało usunięte."
 
-#: plinth/modules/backups/views.py:174
+#: plinth/modules/backups/views.py:180
 msgid "Restored files from backup."
 msgstr "Odtworzono dane z kopii zapasowej."
 
-#: plinth/modules/backups/views.py:198
+#: plinth/modules/backups/views.py:208
 msgid "No backup file found."
 msgstr "Brak kopii zapasowych."
 
-#: plinth/modules/backups/views.py:206
+#: plinth/modules/backups/views.py:216
 msgid "Restore from uploaded file"
 msgstr "Odtwórz z przesłanego pliku"
 
-#: plinth/modules/backups/views.py:260
-msgid "Added new repository."
-msgstr "Dodano nowe archiwum."
-
-#: plinth/modules/backups/views.py:265
+#: plinth/modules/backups/views.py:272
 msgid "Create remote backup repository"
 msgstr "Utwórz zdalne repozytorium kopii zapasowych"
 
-#: plinth/modules/backups/views.py:296
+#: plinth/modules/backups/views.py:292
+#, fuzzy
+#| msgid "Added new repository."
+msgid "Added new remote SSH repository."
+msgstr "Dodano nowe archiwum."
+
+#: plinth/modules/backups/views.py:315
+msgid "Verify SSH hostkey"
+msgstr ""
+
+#: plinth/modules/backups/views.py:349
+msgid "SSH host already verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:358
+msgid "SSH host verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:382
+msgid "SSH host public key could not be verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:384
+msgid "Authentication to remote server failed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:386
+#, fuzzy
+#| msgid "Error installing application: {error}"
+msgid "Error establishing connection to server: {}"
+msgstr "Błąd podczas instalowania aplikacji: {error}"
+
+#: plinth/modules/backups/views.py:389
+msgid "Repository path is neither empty nor is an existing backups repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:396
+#, fuzzy
+#| msgid "Repository not found"
+msgid "Repository removed."
+msgstr "Nie odnaleziono repozytorium"
+
+#: plinth/modules/backups/views.py:471
 msgid "Repository removed. The remote backup itself was not deleted."
 msgstr ""
 "Usunięto repozytorium. Umieszczona w nim kopia bezpieczeństwa nie została "
 "usunięta."
 
-#: plinth/modules/backups/views.py:304
+#: plinth/modules/backups/views.py:481
 msgid "Unmounting failed!"
 msgstr "Nie udało się odmontować!"
 
-#: plinth/modules/backups/views.py:313 plinth/modules/backups/views.py:317
+#: plinth/modules/backups/views.py:496 plinth/modules/backups/views.py:500
 msgid "Mounting failed"
 msgstr "Montowanie nie udało się"
 
@@ -2289,7 +2378,13 @@ msgid ""
 "the initial setup is currently not supported."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:40
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:36
+msgid ""
+"New users can be registered from any client if public registration is "
+"enabled."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:45
 #, python-format
 msgid ""
 "\n"
@@ -5415,7 +5510,7 @@ msgstr "Język"
 msgid "Log in"
 msgstr "Zaloguj się"
 
-#: plinth/templates/clients.html:28
+#: plinth/templates/clients.html:29
 #, fuzzy
 #| msgid "Chat Client"
 msgid "Client Apps"
@@ -5636,6 +5731,10 @@ msgstr "Aplikacja wyłączona"
 msgid "Gujarati"
 msgstr ""
 
+#~ msgid "Accessing the remote repository failed. Details: %(err)s"
+#~ msgstr ""
+#~ "Nie powiodło się połączenie ze zdalnym repozytorium. Szczegóły: %(err)s"
+
 #~ msgid "Current status:"
 #~ msgstr "Aktualny status:"
 
diff --git a/plinth/locale/pt/LC_MESSAGES/django.po b/plinth/locale/pt/LC_MESSAGES/django.po
index 64912c831..e2fa5f12f 100644
--- a/plinth/locale/pt/LC_MESSAGES/django.po
+++ b/plinth/locale/pt/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-06-24 19:48-0400\n"
+"POT-Creation-Date: 2019-07-08 17:31-0400\n"
 "PO-Revision-Date: 2019-06-22 06:01+0000\n"
 "Last-Translator: adaragao <adaragao@gmail.com>\n"
 "Language-Team: Portuguese <https://hosted.weblate.org/projects/freedombox/"
@@ -127,53 +127,76 @@ msgstr ""
 "locais. Pode ser desativado para melhorar a segurança, especialmente ao "
 "ligar a uma rede local hostil."
 
-#: plinth/modules/backups/__init__.py:38 plinth/modules/backups/views.py:50
+#: plinth/modules/backups/__init__.py:41 plinth/modules/backups/views.py:54
 msgid "Backups"
 msgstr "Cópia de segurança"
 
-#: plinth/modules/backups/__init__.py:41
+#: plinth/modules/backups/__init__.py:44
 msgid "Backups allows creating and managing backup archives."
 msgstr "Backups permite criar e gerenciar arquivos de backup."
 
-#: plinth/modules/backups/__init__.py:49
+#: plinth/modules/backups/__init__.py:52
 #, python-brace-format
 msgid "{box_name} storage"
 msgstr "{box_name} armazenamento"
 
-#: plinth/modules/backups/forms.py:38
+#: plinth/modules/backups/forms.py:47
 #, python-brace-format
 msgid "{app} (No data to backup)"
 msgstr "{app} (Não há dados para cópia de segurança)"
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Included apps"
 msgstr "Apps incluídos"
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Apps to include in the backup"
 msgstr "Apps para incluir no backup"
 
-#: plinth/modules/backups/forms.py:72
+#: plinth/modules/backups/forms.py:83
 msgid "Select the apps you want to restore"
 msgstr "Selecione os aplicativos que deseja restaurar"
 
-#: plinth/modules/backups/forms.py:85
+#: plinth/modules/backups/forms.py:96
 msgid "Upload File"
 msgstr "Carregar Ficheiro"
 
-#: plinth/modules/backups/forms.py:88
+#: plinth/modules/backups/forms.py:98
 msgid "Backup files have to be in .tar.gz format"
 msgstr "Ficheiros de cópias de segurança têm de ser em formato .tar.gz"
 
-#: plinth/modules/backups/forms.py:89
+#: plinth/modules/backups/forms.py:99
 msgid "Select the backup file you want to upload"
 msgstr "Selecione o ficheiro de backup que deseja carregar"
 
-#: plinth/modules/backups/forms.py:94
+#: plinth/modules/backups/forms.py:105
+#, fuzzy
+#| msgid "Repository not found"
+msgid "Repository path format incorrect."
+msgstr "Repositório não encontrado"
+
+#: plinth/modules/backups/forms.py:112
+#, fuzzy, python-brace-format
+#| msgid "Invalid archive name"
+msgid "Invalid username: {username}"
+msgstr "Nome de arquivo inválido"
+
+#: plinth/modules/backups/forms.py:122
+#, fuzzy, python-brace-format
+#| msgid "Invalid domain name"
+msgid "Invalid hostname: {hostname}"
+msgstr "Nome de domínio inválido"
+
+#: plinth/modules/backups/forms.py:126
+#, python-brace-format
+msgid "Invalid directory path: {dir_path}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:132
 msgid "SSH Repository Path"
 msgstr "Caminho do repositório SSH"
 
-#: plinth/modules/backups/forms.py:95
+#: plinth/modules/backups/forms.py:133
 msgid ""
 "Path of a new or existing repository. Example: <i>user@host:~/path/to/repo/</"
 "i>"
@@ -181,11 +204,11 @@ msgstr ""
 "Caminho para  um repositório novo ou existente. Exemplo: <i>user@host:~/path/"
 "to/repo/</i>"
 
-#: plinth/modules/backups/forms.py:98
+#: plinth/modules/backups/forms.py:137
 msgid "SSH server password"
 msgstr "Password do servidor SSH"
 
-#: plinth/modules/backups/forms.py:99
+#: plinth/modules/backups/forms.py:138
 msgid ""
 "Password of the SSH Server.<br />SSH key-based authentication is not yet "
 "possible."
@@ -193,11 +216,11 @@ msgstr ""
 "Password do Servidor SSH.<br />Autenticação SSH key-based ainda não é "
 "possível."
 
-#: plinth/modules/backups/forms.py:104
+#: plinth/modules/backups/forms.py:142
 msgid "Encryption"
 msgstr "Encriptação"
 
-#: plinth/modules/backups/forms.py:106
+#: plinth/modules/backups/forms.py:143
 msgid ""
 "\"Key in Repository\" means that a password-protected key is stored with the "
 "backup."
@@ -205,32 +228,41 @@ msgstr ""
 "\"Chave no Repositório\" significa que uma chave  protegida por password é "
 "guardada com a cópia de segurança."
 
-#: plinth/modules/backups/forms.py:111 plinth/modules/networks/forms.py:304
+#: plinth/modules/backups/forms.py:147 plinth/modules/networks/forms.py:304
 msgid "Passphrase"
 msgstr "Frase-Chave"
 
-#: plinth/modules/backups/forms.py:112
+#: plinth/modules/backups/forms.py:148
 msgid "Passphrase; Only needed when using encryption."
 msgstr "Frase-Chave; Apenas necessária quando é usada encriptação."
 
-#: plinth/modules/backups/forms.py:117
+#: plinth/modules/backups/forms.py:151
 msgid "Confirm Passphrase"
 msgstr "Confirme Frase-Chave."
 
-#: plinth/modules/backups/forms.py:118
+#: plinth/modules/backups/forms.py:151
 msgid "Repeat the passphrase."
 msgstr "Repetir a Frase-Chave."
 
-#: plinth/modules/backups/forms.py:139
+#: plinth/modules/backups/forms.py:162
 msgid "The entered encryption passphrases do not match"
 msgstr "As Frases-Chaves de encriptação inseridas não coincidem."
 
-#: plinth/modules/backups/forms.py:151
-#, python-format
-msgid "Accessing the remote repository failed. Details: %(err)s"
-msgstr "Acesso ao repositório remoto falhou. Detalhes: %(err)s"
+#: plinth/modules/backups/forms.py:166
+#, fuzzy
+#| msgid "Passphrase; Only needed when using encryption."
+msgid "Passphrase is needed for encryption."
+msgstr "Frase-Chave; Apenas necessária quando é usada encriptação."
 
-#: plinth/modules/backups/repository.py:45
+#: plinth/modules/backups/forms.py:183
+msgid "Remote backup repository already exists."
+msgstr ""
+
+#: plinth/modules/backups/forms.py:189
+msgid "Select verified SSH public key"
+msgstr ""
+
+#: plinth/modules/backups/repository.py:46
 msgid ""
 "Connection refused - make sure you provided correct credentials and the "
 "server is running."
@@ -238,24 +270,26 @@ msgstr ""
 "Conexão  recusada - verifique se providenciou as corretas credenciais e se o "
 "servidor está activo."
 
-#: plinth/modules/backups/repository.py:51
+#: plinth/modules/backups/repository.py:53
 msgid "Connection refused"
 msgstr "Conexão recusada"
 
-#: plinth/modules/backups/repository.py:58
+#: plinth/modules/backups/repository.py:62
 msgid "Repository not found"
 msgstr "Repositório não encontrado"
 
-#: plinth/modules/backups/repository.py:65
+#: plinth/modules/backups/repository.py:70
 msgid "Incorrect encryption passphrase"
 msgstr "Frase-Chave de encriptação incorrecta"
 
-#: plinth/modules/backups/repository.py:70
+#: plinth/modules/backups/repository.py:76
 msgid "SSH access denied"
 msgstr "Acesso SSH recusado"
 
 #: plinth/modules/backups/templates/backups.html:47
-msgid "Existing backups"
+#, fuzzy
+#| msgid "Existing backups"
+msgid "Existing backup locations"
 msgstr "Cópias de segurança existentes"
 
 #: plinth/modules/backups/templates/backups.html:57
@@ -308,6 +342,7 @@ msgstr ""
 #: plinth/modules/backups/templates/backups_repository_add.html:45
 #: plinth/modules/backups/templates/backups_repository_remove.html:49
 #: plinth/modules/backups/templates/backups_restore.html:52
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:61
 #: plinth/modules/ikiwiki/templates/ikiwiki_delete.html:47
 #: plinth/modules/monkeysphere/templates/monkeysphere.html:67
 #: plinth/modules/networks/templates/connections_delete.html:41
@@ -330,7 +365,7 @@ msgid ""
 msgstr ""
 
 #: plinth/modules/backups/templates/backups_repository_remove.html:46
-#: plinth/modules/backups/views.py:286
+#: plinth/modules/backups/views.py:461
 msgid "Remove Repository"
 msgstr ""
 
@@ -341,7 +376,7 @@ msgid "Restore data from"
 msgstr "Restaurar dados deste arquivo?"
 
 #: plinth/modules/backups/templates/backups_restore.html:43
-#: plinth/modules/backups/views.py:186
+#: plinth/modules/backups/views.py:192
 msgid "Restore"
 msgstr "Restaurar"
 
@@ -388,61 +423,114 @@ msgstr ""
 msgid "Upload file"
 msgstr ""
 
-#: plinth/modules/backups/views.py:53
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:40
+msgid "How to verify?"
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:45
+msgid ""
+"Run the following command on the SSH host machine. The output should match "
+"one of the provided options. You can also use dsa, ecdsa, ed25519 etc. "
+"instead of rsa, by choosing the corresponding file."
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:59
+msgid "Verify Host"
+msgstr ""
+
+#: plinth/modules/backups/views.py:57
 #, fuzzy
 #| msgid "Upload File"
 msgid "Upload"
 msgstr "Carregar Ficheiro"
 
-#: plinth/modules/backups/views.py:56 plinth/modules/ikiwiki/views.py:41
+#: plinth/modules/backups/views.py:60 plinth/modules/ikiwiki/views.py:41
 msgid "Create"
 msgstr ""
 
-#: plinth/modules/backups/views.py:84
+#: plinth/modules/backups/views.py:88
 msgid "Archive created."
 msgstr "Arquivo criado."
 
-#: plinth/modules/backups/views.py:111
+#: plinth/modules/backups/views.py:117
 msgid "Delete Archive"
 msgstr "Apagar arquivo"
 
-#: plinth/modules/backups/views.py:123
+#: plinth/modules/backups/views.py:129
 msgid "Archive deleted."
 msgstr "Arquivo apagado."
 
-#: plinth/modules/backups/views.py:174
+#: plinth/modules/backups/views.py:180
 msgid "Restored files from backup."
 msgstr "Arquivos do backup restaurados."
 
-#: plinth/modules/backups/views.py:198
+#: plinth/modules/backups/views.py:208
 #, fuzzy
 #| msgid "No exported backup archives were found."
 msgid "No backup file found."
 msgstr "Não foram encontrados arquivos de backup exportados."
 
-#: plinth/modules/backups/views.py:206
+#: plinth/modules/backups/views.py:216
 #, fuzzy
 #| msgid "Restore from backup"
 msgid "Restore from uploaded file"
 msgstr "Restaurar a partir do backup"
 
-#: plinth/modules/backups/views.py:260
-msgid "Added new repository."
-msgstr ""
-
-#: plinth/modules/backups/views.py:265
+#: plinth/modules/backups/views.py:272
 msgid "Create remote backup repository"
 msgstr ""
 
-#: plinth/modules/backups/views.py:296
+#: plinth/modules/backups/views.py:292
+#, fuzzy
+#| msgid "Add Remote Repository"
+msgid "Added new remote SSH repository."
+msgstr "Adicionar Repositório Remoto"
+
+#: plinth/modules/backups/views.py:315
+msgid "Verify SSH hostkey"
+msgstr ""
+
+#: plinth/modules/backups/views.py:349
+msgid "SSH host already verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:358
+msgid "SSH host verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:382
+msgid "SSH host public key could not be verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:384
+msgid "Authentication to remote server failed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:386
+#, fuzzy
+#| msgid "Error installing application: {error}"
+msgid "Error establishing connection to server: {}"
+msgstr "Erro a instalar a aplicação: {error}"
+
+#: plinth/modules/backups/views.py:389
+msgid "Repository path is neither empty nor is an existing backups repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:396
+#, fuzzy
+#| msgid "Repository not found"
+msgid "Repository removed."
+msgstr "Repositório não encontrado"
+
+#: plinth/modules/backups/views.py:471
 msgid "Repository removed. The remote backup itself was not deleted."
 msgstr ""
 
-#: plinth/modules/backups/views.py:304
+#: plinth/modules/backups/views.py:481
 msgid "Unmounting failed!"
 msgstr ""
 
-#: plinth/modules/backups/views.py:313 plinth/modules/backups/views.py:317
+#: plinth/modules/backups/views.py:496 plinth/modules/backups/views.py:500
 msgid "Mounting failed"
 msgstr ""
 
@@ -2138,7 +2226,13 @@ msgid ""
 "the initial setup is currently not supported."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:40
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:36
+msgid ""
+"New users can be registered from any client if public registration is "
+"enabled."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:45
 #, python-format
 msgid ""
 "\n"
@@ -5229,7 +5323,7 @@ msgstr "Língua"
 msgid "Log in"
 msgstr ""
 
-#: plinth/templates/clients.html:28
+#: plinth/templates/clients.html:29
 msgid "Client Apps"
 msgstr ""
 
@@ -5436,6 +5530,9 @@ msgstr "Aplicações"
 msgid "Gujarati"
 msgstr ""
 
+#~ msgid "Accessing the remote repository failed. Details: %(err)s"
+#~ msgstr "Acesso ao repositório remoto falhou. Detalhes: %(err)s"
+
 #, fuzzy
 #~| msgid "Error setting language: {exception}"
 #~ msgid "Error setting default app: {exception}"
@@ -5463,9 +5560,6 @@ msgstr ""
 #~ msgid "Name for new backup archive."
 #~ msgstr "Nome para o novo arquivo de backup."
 
-#~ msgid "Invalid archive name"
-#~ msgstr "Nome de arquivo inválido"
-
 #~ msgid "No archives currently exist."
 #~ msgstr "Nenhum arquivo atualmente existe."
 
diff --git a/plinth/locale/ru/LC_MESSAGES/django.po b/plinth/locale/ru/LC_MESSAGES/django.po
index 94d119071..5d262fec1 100644
--- a/plinth/locale/ru/LC_MESSAGES/django.po
+++ b/plinth/locale/ru/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-06-24 19:48-0400\n"
+"POT-Creation-Date: 2019-07-08 17:31-0400\n"
 "PO-Revision-Date: 2019-07-08 05:01+0000\n"
 "Last-Translator: Andrey Vostrikov <av.linux.dev@gmail.com>\n"
 "Language-Team: Russian <https://hosted.weblate.org/projects/freedombox/"
@@ -16,8 +16,8 @@ msgstr ""
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Plural-Forms: nplurals=3; plural=n%10==1 && n%100!=11 ? 0 : n%10>=2 && n%10<="
-"4 && (n%100<10 || n%100>=20) ? 1 : 2;\n"
+"Plural-Forms: nplurals=3; plural=n%10==1 && n%100!=11 ? 0 : n%10>=2 && n"
+"%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2;\n"
 "X-Generator: Weblate 3.8-dev\n"
 
 #: plinth/action_utils.py:298
@@ -128,54 +128,77 @@ msgstr ""
 "Она может быть отключена в целях повышения безопасности, особенно при "
 "подключении к вражеской сети."
 
-#: plinth/modules/backups/__init__.py:38 plinth/modules/backups/views.py:50
+#: plinth/modules/backups/__init__.py:41 plinth/modules/backups/views.py:54
 msgid "Backups"
 msgstr "Резервные копии"
 
-#: plinth/modules/backups/__init__.py:41
+#: plinth/modules/backups/__init__.py:44
 msgid "Backups allows creating and managing backup archives."
 msgstr ""
 "Резервное копирование позволяет создавать и управлять резервными архивами."
 
-#: plinth/modules/backups/__init__.py:49
+#: plinth/modules/backups/__init__.py:52
 #, python-brace-format
 msgid "{box_name} storage"
 msgstr "Сохранение данных {box_name}"
 
-#: plinth/modules/backups/forms.py:38
+#: plinth/modules/backups/forms.py:47
 #, python-brace-format
 msgid "{app} (No data to backup)"
 msgstr "{app} (Нет данных для резервного сохранения)"
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Included apps"
 msgstr "Включённые приложения"
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Apps to include in the backup"
 msgstr "Приложения, включённые в резервное сохранение"
 
-#: plinth/modules/backups/forms.py:72
+#: plinth/modules/backups/forms.py:83
 msgid "Select the apps you want to restore"
 msgstr "Выберите приложения, которые вы хотите восстановить"
 
-#: plinth/modules/backups/forms.py:85
+#: plinth/modules/backups/forms.py:96
 msgid "Upload File"
 msgstr "Скачать файл"
 
-#: plinth/modules/backups/forms.py:88
+#: plinth/modules/backups/forms.py:98
 msgid "Backup files have to be in .tar.gz format"
 msgstr "Файлы резервного сохранения должны быть в формате .tar.gz"
 
-#: plinth/modules/backups/forms.py:89
+#: plinth/modules/backups/forms.py:99
 msgid "Select the backup file you want to upload"
 msgstr "Выберите файл резервного сохранения для загрузки на локальную машину"
 
-#: plinth/modules/backups/forms.py:94
+#: plinth/modules/backups/forms.py:105
+#, fuzzy
+#| msgid "Repository not found"
+msgid "Repository path format incorrect."
+msgstr "Репозиторий не найден"
+
+#: plinth/modules/backups/forms.py:112
+#, fuzzy, python-brace-format
+#| msgid "Invalid server name"
+msgid "Invalid username: {username}"
+msgstr "Недопустимое имя сервера"
+
+#: plinth/modules/backups/forms.py:122
+#, fuzzy, python-brace-format
+#| msgid "Invalid hostname"
+msgid "Invalid hostname: {hostname}"
+msgstr "Недопустимое имя хоста"
+
+#: plinth/modules/backups/forms.py:126
+#, python-brace-format
+msgid "Invalid directory path: {dir_path}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:132
 msgid "SSH Repository Path"
 msgstr "Путь к репозиторию SSH"
 
-#: plinth/modules/backups/forms.py:95
+#: plinth/modules/backups/forms.py:133
 msgid ""
 "Path of a new or existing repository. Example: <i>user@host:~/path/to/repo/</"
 "i>"
@@ -183,22 +206,22 @@ msgstr ""
 "Путь к новому или существующему репозиторию. Например: <i>user@host:~/path/"
 "to/repo/</i>"
 
-#: plinth/modules/backups/forms.py:98
+#: plinth/modules/backups/forms.py:137
 msgid "SSH server password"
 msgstr "Пароль SSH-сервера"
 
-#: plinth/modules/backups/forms.py:99
+#: plinth/modules/backups/forms.py:138
 msgid ""
 "Password of the SSH Server.<br />SSH key-based authentication is not yet "
 "possible."
 msgstr ""
 "Пароль SSH сервера.<br />SSH key-based authentication is not yet possible."
 
-#: plinth/modules/backups/forms.py:104
+#: plinth/modules/backups/forms.py:142
 msgid "Encryption"
 msgstr "Шифрование"
 
-#: plinth/modules/backups/forms.py:106
+#: plinth/modules/backups/forms.py:143
 msgid ""
 "\"Key in Repository\" means that a password-protected key is stored with the "
 "backup."
@@ -206,32 +229,43 @@ msgstr ""
 "«Ключ в репозитории» подразумевает, что защищённый паролем ключ сохранен "
 "вместе с резервным копированием."
 
-#: plinth/modules/backups/forms.py:111 plinth/modules/networks/forms.py:304
+#: plinth/modules/backups/forms.py:147 plinth/modules/networks/forms.py:304
 msgid "Passphrase"
 msgstr "Парольная фраза"
 
-#: plinth/modules/backups/forms.py:112
+#: plinth/modules/backups/forms.py:148
 msgid "Passphrase; Only needed when using encryption."
 msgstr "Парольная фраза; нужна только если используется шифрование."
 
-#: plinth/modules/backups/forms.py:117
+#: plinth/modules/backups/forms.py:151
 msgid "Confirm Passphrase"
 msgstr "Подтвердите парольную фразу"
 
-#: plinth/modules/backups/forms.py:118
+#: plinth/modules/backups/forms.py:151
 msgid "Repeat the passphrase."
 msgstr "Повторите парольную фразу."
 
-#: plinth/modules/backups/forms.py:139
+#: plinth/modules/backups/forms.py:162
 msgid "The entered encryption passphrases do not match"
 msgstr "Введённые парольные фразы шифрования неправильные"
 
-#: plinth/modules/backups/forms.py:151
-#, python-format
-msgid "Accessing the remote repository failed. Details: %(err)s"
-msgstr "Доступ к удаленному репозиторию не удался. Подробности : %(err)s"
+#: plinth/modules/backups/forms.py:166
+#, fuzzy
+#| msgid "Passphrase; Only needed when using encryption."
+msgid "Passphrase is needed for encryption."
+msgstr "Парольная фраза; нужна только если используется шифрование."
 
-#: plinth/modules/backups/repository.py:45
+#: plinth/modules/backups/forms.py:183
+#, fuzzy
+#| msgid "Create remote backup repository"
+msgid "Remote backup repository already exists."
+msgstr "Создать удаленный репозиторий резервного сохранения"
+
+#: plinth/modules/backups/forms.py:189
+msgid "Select verified SSH public key"
+msgstr ""
+
+#: plinth/modules/backups/repository.py:46
 msgid ""
 "Connection refused - make sure you provided correct credentials and the "
 "server is running."
@@ -239,24 +273,26 @@ msgstr ""
 "В соединении отказано — убедитесь, что вводите правильные учетные данные и "
 "сервер запущен."
 
-#: plinth/modules/backups/repository.py:51
+#: plinth/modules/backups/repository.py:53
 msgid "Connection refused"
 msgstr "В соединении отказано"
 
-#: plinth/modules/backups/repository.py:58
+#: plinth/modules/backups/repository.py:62
 msgid "Repository not found"
 msgstr "Репозиторий не найден"
 
-#: plinth/modules/backups/repository.py:65
+#: plinth/modules/backups/repository.py:70
 msgid "Incorrect encryption passphrase"
 msgstr "Неправильная парольная фраза шифрования"
 
-#: plinth/modules/backups/repository.py:70
+#: plinth/modules/backups/repository.py:76
 msgid "SSH access denied"
 msgstr "В доступе по SSH отказано"
 
 #: plinth/modules/backups/templates/backups.html:47
-msgid "Existing backups"
+#, fuzzy
+#| msgid "Existing backups"
+msgid "Existing backup locations"
 msgstr "Существующие резервные копии"
 
 #: plinth/modules/backups/templates/backups.html:57
@@ -312,6 +348,7 @@ msgstr "Создать репозиторий"
 #: plinth/modules/backups/templates/backups_repository_add.html:45
 #: plinth/modules/backups/templates/backups_repository_remove.html:49
 #: plinth/modules/backups/templates/backups_restore.html:52
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:61
 #: plinth/modules/ikiwiki/templates/ikiwiki_delete.html:47
 #: plinth/modules/monkeysphere/templates/monkeysphere.html:67
 #: plinth/modules/networks/templates/connections_delete.html:41
@@ -341,7 +378,7 @@ msgstr ""
 "    "
 
 #: plinth/modules/backups/templates/backups_repository_remove.html:46
-#: plinth/modules/backups/views.py:286
+#: plinth/modules/backups/views.py:461
 msgid "Remove Repository"
 msgstr "Удалить репозиторий"
 
@@ -350,7 +387,7 @@ msgid "Restore data from"
 msgstr "Восстановить данные из"
 
 #: plinth/modules/backups/templates/backups_restore.html:43
-#: plinth/modules/backups/views.py:186
+#: plinth/modules/backups/views.py:192
 msgid "Restore"
 msgstr "Восстановить"
 
@@ -393,57 +430,110 @@ msgstr ""
 msgid "Upload file"
 msgstr "Загрузить файл"
 
-#: plinth/modules/backups/views.py:53
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:40
+msgid "How to verify?"
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:45
+msgid ""
+"Run the following command on the SSH host machine. The output should match "
+"one of the provided options. You can also use dsa, ecdsa, ed25519 etc. "
+"instead of rsa, by choosing the corresponding file."
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:59
+msgid "Verify Host"
+msgstr ""
+
+#: plinth/modules/backups/views.py:57
 msgid "Upload"
 msgstr "Скачать"
 
-#: plinth/modules/backups/views.py:56 plinth/modules/ikiwiki/views.py:41
+#: plinth/modules/backups/views.py:60 plinth/modules/ikiwiki/views.py:41
 msgid "Create"
 msgstr "Создать"
 
-#: plinth/modules/backups/views.py:84
+#: plinth/modules/backups/views.py:88
 msgid "Archive created."
 msgstr "Архив создан."
 
-#: plinth/modules/backups/views.py:111
+#: plinth/modules/backups/views.py:117
 msgid "Delete Archive"
 msgstr "Удалить архив"
 
-#: plinth/modules/backups/views.py:123
+#: plinth/modules/backups/views.py:129
 msgid "Archive deleted."
 msgstr "Архив удалён."
 
-#: plinth/modules/backups/views.py:174
+#: plinth/modules/backups/views.py:180
 msgid "Restored files from backup."
 msgstr "Восстановленные файлы из резервного копирования."
 
-#: plinth/modules/backups/views.py:198
+#: plinth/modules/backups/views.py:208
 msgid "No backup file found."
 msgstr "Резервных  копий не найдено."
 
-#: plinth/modules/backups/views.py:206
+#: plinth/modules/backups/views.py:216
 msgid "Restore from uploaded file"
 msgstr "Восстановить из загруженного файла"
 
-#: plinth/modules/backups/views.py:260
-msgid "Added new repository."
-msgstr "Добавить новый репозиторий."
-
-#: plinth/modules/backups/views.py:265
+#: plinth/modules/backups/views.py:272
 msgid "Create remote backup repository"
 msgstr "Создать удаленный репозиторий резервного сохранения"
 
-#: plinth/modules/backups/views.py:296
+#: plinth/modules/backups/views.py:292
+#, fuzzy
+#| msgid "Added new repository."
+msgid "Added new remote SSH repository."
+msgstr "Добавить новый репозиторий."
+
+#: plinth/modules/backups/views.py:315
+msgid "Verify SSH hostkey"
+msgstr ""
+
+#: plinth/modules/backups/views.py:349
+msgid "SSH host already verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:358
+msgid "SSH host verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:382
+msgid "SSH host public key could not be verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:384
+msgid "Authentication to remote server failed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:386
+#, fuzzy
+#| msgid "Error installing application: {error}"
+msgid "Error establishing connection to server: {}"
+msgstr "Ошибка при установке приложения: {error}"
+
+#: plinth/modules/backups/views.py:389
+msgid "Repository path is neither empty nor is an existing backups repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:396
+#, fuzzy
+#| msgid "Repository not found"
+msgid "Repository removed."
+msgstr "Репозиторий не найден"
+
+#: plinth/modules/backups/views.py:471
 msgid "Repository removed. The remote backup itself was not deleted."
 msgstr ""
 "Репозиторий удалён. Файлы резервного сохранения на удаленной машине не были "
 "удалены."
 
-#: plinth/modules/backups/views.py:304
+#: plinth/modules/backups/views.py:481
 msgid "Unmounting failed!"
 msgstr "Размонтирование не удалось!"
 
-#: plinth/modules/backups/views.py:313 plinth/modules/backups/views.py:317
+#: plinth/modules/backups/views.py:496 plinth/modules/backups/views.py:500
 msgid "Mounting failed"
 msgstr "Монтирование не удалась"
 
@@ -2356,7 +2446,13 @@ msgstr ""
 "em>. Изменение имени домена после первоначальной настройки в настоящее время "
 "не поддерживается."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:40
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:36
+msgid ""
+"New users can be registered from any client if public registration is "
+"enabled."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:45
 #, python-format
 msgid ""
 "\n"
@@ -5803,7 +5899,7 @@ msgstr "Выберите язык"
 msgid "Log in"
 msgstr "Войти"
 
-#: plinth/templates/clients.html:28
+#: plinth/templates/clients.html:29
 msgid "Client Apps"
 msgstr "Клиентские Приложения"
 
@@ -6019,6 +6115,9 @@ msgstr "Приложение отключено"
 msgid "Gujarati"
 msgstr "Гуджарати"
 
+#~ msgid "Accessing the remote repository failed. Details: %(err)s"
+#~ msgstr "Доступ к удаленному репозиторию не удался. Подробности : %(err)s"
+
 #~ msgid "Tor Anonymity Network"
 #~ msgstr "Tоr Anonymity Network"
 
diff --git a/plinth/locale/sl/LC_MESSAGES/django.po b/plinth/locale/sl/LC_MESSAGES/django.po
index 522776cfa..82e18cadf 100644
--- a/plinth/locale/sl/LC_MESSAGES/django.po
+++ b/plinth/locale/sl/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-06-24 19:48-0400\n"
+"POT-Creation-Date: 2019-07-08 17:31-0400\n"
 "PO-Revision-Date: 2019-05-07 20:48+0000\n"
 "Last-Translator: Erik Ušaj <erikusaj@hotmail.com>\n"
 "Language-Team: Slovenian <https://hosted.weblate.org/projects/freedombox/"
@@ -128,54 +128,76 @@ msgstr ""
 "onemogočite, če želite povečati varnost npr. ob vzpostavljaju povezave v "
 "neprijaznem lokalnem omrežju."
 
-#: plinth/modules/backups/__init__.py:38 plinth/modules/backups/views.py:50
+#: plinth/modules/backups/__init__.py:41 plinth/modules/backups/views.py:54
 msgid "Backups"
 msgstr "Rezervne kopije"
 
-#: plinth/modules/backups/__init__.py:41
+#: plinth/modules/backups/__init__.py:44
 msgid "Backups allows creating and managing backup archives."
 msgstr ""
 "Rezervne kopije omogočajo ustvarjanje in upravljanje arhivov rezervnih kopij."
 
-#: plinth/modules/backups/__init__.py:49
+#: plinth/modules/backups/__init__.py:52
 #, python-brace-format
 msgid "{box_name} storage"
 msgstr "Shramba {box_name}"
 
-#: plinth/modules/backups/forms.py:38
+#: plinth/modules/backups/forms.py:47
 #, python-brace-format
 msgid "{app} (No data to backup)"
 msgstr "{app} (Brez podatkov za rezervno kopijo)"
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Included apps"
 msgstr "Vključene aplikacije"
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Apps to include in the backup"
 msgstr "Aplikacije, ki jih želite vključiti v rezervne kopije"
 
-#: plinth/modules/backups/forms.py:72
+#: plinth/modules/backups/forms.py:83
 msgid "Select the apps you want to restore"
 msgstr "Izberite aplikacije, ki jih želite obnoviti"
 
-#: plinth/modules/backups/forms.py:85
+#: plinth/modules/backups/forms.py:96
 msgid "Upload File"
 msgstr "Naloži datoteko"
 
-#: plinth/modules/backups/forms.py:88
+#: plinth/modules/backups/forms.py:98
 msgid "Backup files have to be in .tar.gz format"
 msgstr "Datoteke rezervnih kopij morajo biti tipa .tar.gz"
 
-#: plinth/modules/backups/forms.py:89
+#: plinth/modules/backups/forms.py:99
 msgid "Select the backup file you want to upload"
 msgstr "Izberite datoteko rezervne kopije, ki jo želite naložiti"
 
-#: plinth/modules/backups/forms.py:94
+#: plinth/modules/backups/forms.py:105
+#, fuzzy
+#| msgid "Repository not found"
+msgid "Repository path format incorrect."
+msgstr "Ne najdem skladišča"
+
+#: plinth/modules/backups/forms.py:112
+#, python-brace-format
+msgid "Invalid username: {username}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:122
+#, fuzzy, python-brace-format
+#| msgid "Invalid hostname"
+msgid "Invalid hostname: {hostname}"
+msgstr "Neveljavno ime gostitelja"
+
+#: plinth/modules/backups/forms.py:126
+#, python-brace-format
+msgid "Invalid directory path: {dir_path}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:132
 msgid "SSH Repository Path"
 msgstr "Pot skladišča SSH"
 
-#: plinth/modules/backups/forms.py:95
+#: plinth/modules/backups/forms.py:133
 msgid ""
 "Path of a new or existing repository. Example: <i>user@host:~/path/to/repo/</"
 "i>"
@@ -183,11 +205,11 @@ msgstr ""
 "Pot do novega ali obstoječega skladišča. Npr. <i>uporabnik@gostitelj:~/pot/"
 "do/skladišča/</i>"
 
-#: plinth/modules/backups/forms.py:98
+#: plinth/modules/backups/forms.py:137
 msgid "SSH server password"
 msgstr "Geslo strežnika SSH"
 
-#: plinth/modules/backups/forms.py:99
+#: plinth/modules/backups/forms.py:138
 msgid ""
 "Password of the SSH Server.<br />SSH key-based authentication is not yet "
 "possible."
@@ -195,11 +217,11 @@ msgstr ""
 "Geslo strežnika SSH. <br />Preverjanje pristnosti na osnovi ključev SSH še "
 "ni omogočeno."
 
-#: plinth/modules/backups/forms.py:104
+#: plinth/modules/backups/forms.py:142
 msgid "Encryption"
 msgstr "Šifriranje"
 
-#: plinth/modules/backups/forms.py:106
+#: plinth/modules/backups/forms.py:143
 msgid ""
 "\"Key in Repository\" means that a password-protected key is stored with the "
 "backup."
@@ -207,32 +229,43 @@ msgstr ""
 "\"Ključ v skladišču\" pomeni, da je ključ, ki je zaščiten z geslom, shranjen "
 "v rezervni kopiji."
 
-#: plinth/modules/backups/forms.py:111 plinth/modules/networks/forms.py:304
+#: plinth/modules/backups/forms.py:147 plinth/modules/networks/forms.py:304
 msgid "Passphrase"
 msgstr "Geslo"
 
-#: plinth/modules/backups/forms.py:112
+#: plinth/modules/backups/forms.py:148
 msgid "Passphrase; Only needed when using encryption."
 msgstr "Geslo; Zahtevano je le ob uporalbi šifriranja."
 
-#: plinth/modules/backups/forms.py:117
+#: plinth/modules/backups/forms.py:151
 msgid "Confirm Passphrase"
 msgstr "Potrdite geslo"
 
-#: plinth/modules/backups/forms.py:118
+#: plinth/modules/backups/forms.py:151
 msgid "Repeat the passphrase."
 msgstr "Ponovno vpišite geslo."
 
-#: plinth/modules/backups/forms.py:139
+#: plinth/modules/backups/forms.py:162
 msgid "The entered encryption passphrases do not match"
 msgstr "Vpisani gesli za šifriranje se ne ujemata"
 
-#: plinth/modules/backups/forms.py:151
-#, python-format
-msgid "Accessing the remote repository failed. Details: %(err)s"
-msgstr "Dostop do oddaljenega skladiša ni uspel. Podrobnosti: %(err)s"
+#: plinth/modules/backups/forms.py:166
+#, fuzzy
+#| msgid "Passphrase; Only needed when using encryption."
+msgid "Passphrase is needed for encryption."
+msgstr "Geslo; Zahtevano je le ob uporalbi šifriranja."
 
-#: plinth/modules/backups/repository.py:45
+#: plinth/modules/backups/forms.py:183
+#, fuzzy
+#| msgid "Create remote backup repository"
+msgid "Remote backup repository already exists."
+msgstr "Ustvari oddaljeno skladišče za rezervne kopije"
+
+#: plinth/modules/backups/forms.py:189
+msgid "Select verified SSH public key"
+msgstr ""
+
+#: plinth/modules/backups/repository.py:46
 msgid ""
 "Connection refused - make sure you provided correct credentials and the "
 "server is running."
@@ -240,24 +273,26 @@ msgstr ""
 "Povezava je zavrnjena - preverite, ali ste vpisali ustrezne poverilnice in "
 "strežnik deluje."
 
-#: plinth/modules/backups/repository.py:51
+#: plinth/modules/backups/repository.py:53
 msgid "Connection refused"
 msgstr "Povezava je zavrnjena"
 
-#: plinth/modules/backups/repository.py:58
+#: plinth/modules/backups/repository.py:62
 msgid "Repository not found"
 msgstr "Ne najdem skladišča"
 
-#: plinth/modules/backups/repository.py:65
+#: plinth/modules/backups/repository.py:70
 msgid "Incorrect encryption passphrase"
 msgstr "Nepravilno šifrirno geslo"
 
-#: plinth/modules/backups/repository.py:70
+#: plinth/modules/backups/repository.py:76
 msgid "SSH access denied"
 msgstr "Zavrnjen je dostop SSH"
 
 #: plinth/modules/backups/templates/backups.html:47
-msgid "Existing backups"
+#, fuzzy
+#| msgid "Existing backups"
+msgid "Existing backup locations"
 msgstr "Obstoječe rezervne kopije"
 
 #: plinth/modules/backups/templates/backups.html:57
@@ -313,6 +348,7 @@ msgstr "Ustvari skladišče"
 #: plinth/modules/backups/templates/backups_repository_add.html:45
 #: plinth/modules/backups/templates/backups_repository_remove.html:49
 #: plinth/modules/backups/templates/backups_restore.html:52
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:61
 #: plinth/modules/ikiwiki/templates/ikiwiki_delete.html:47
 #: plinth/modules/monkeysphere/templates/monkeysphere.html:67
 #: plinth/modules/networks/templates/connections_delete.html:41
@@ -340,7 +376,7 @@ msgstr ""
 "    "
 
 #: plinth/modules/backups/templates/backups_repository_remove.html:46
-#: plinth/modules/backups/views.py:286
+#: plinth/modules/backups/views.py:461
 msgid "Remove Repository"
 msgstr "Odstrani skladišče"
 
@@ -349,7 +385,7 @@ msgid "Restore data from"
 msgstr "Obnovi podatke iz"
 
 #: plinth/modules/backups/templates/backups_restore.html:43
-#: plinth/modules/backups/views.py:186
+#: plinth/modules/backups/views.py:192
 msgid "Restore"
 msgstr "Obnovitev"
 
@@ -393,55 +429,108 @@ msgstr ""
 msgid "Upload file"
 msgstr "Nalaganje datoteke"
 
-#: plinth/modules/backups/views.py:53
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:40
+msgid "How to verify?"
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:45
+msgid ""
+"Run the following command on the SSH host machine. The output should match "
+"one of the provided options. You can also use dsa, ecdsa, ed25519 etc. "
+"instead of rsa, by choosing the corresponding file."
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:59
+msgid "Verify Host"
+msgstr ""
+
+#: plinth/modules/backups/views.py:57
 msgid "Upload"
 msgstr "Nalaganje"
 
-#: plinth/modules/backups/views.py:56 plinth/modules/ikiwiki/views.py:41
+#: plinth/modules/backups/views.py:60 plinth/modules/ikiwiki/views.py:41
 msgid "Create"
 msgstr "Ustvari"
 
-#: plinth/modules/backups/views.py:84
+#: plinth/modules/backups/views.py:88
 msgid "Archive created."
 msgstr "Arhiv je ustvarjen."
 
-#: plinth/modules/backups/views.py:111
+#: plinth/modules/backups/views.py:117
 msgid "Delete Archive"
 msgstr "Izbriši arhiv"
 
-#: plinth/modules/backups/views.py:123
+#: plinth/modules/backups/views.py:129
 msgid "Archive deleted."
 msgstr "Arhiv je izbrisan."
 
-#: plinth/modules/backups/views.py:174
+#: plinth/modules/backups/views.py:180
 msgid "Restored files from backup."
 msgstr "Datoteke iz rezervne kopije so obnovljene."
 
-#: plinth/modules/backups/views.py:198
+#: plinth/modules/backups/views.py:208
 msgid "No backup file found."
 msgstr "Ne najdem datoteke z rezervno kopijo."
 
-#: plinth/modules/backups/views.py:206
+#: plinth/modules/backups/views.py:216
 msgid "Restore from uploaded file"
 msgstr "Obnavljanje iz naložene datoteke"
 
-#: plinth/modules/backups/views.py:260
-msgid "Added new repository."
-msgstr "Dodano je novo skladišče."
-
-#: plinth/modules/backups/views.py:265
+#: plinth/modules/backups/views.py:272
 msgid "Create remote backup repository"
 msgstr "Ustvari oddaljeno skladišče za rezervne kopije"
 
-#: plinth/modules/backups/views.py:296
+#: plinth/modules/backups/views.py:292
+#, fuzzy
+#| msgid "Added new repository."
+msgid "Added new remote SSH repository."
+msgstr "Dodano je novo skladišče."
+
+#: plinth/modules/backups/views.py:315
+msgid "Verify SSH hostkey"
+msgstr ""
+
+#: plinth/modules/backups/views.py:349
+msgid "SSH host already verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:358
+msgid "SSH host verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:382
+msgid "SSH host public key could not be verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:384
+msgid "Authentication to remote server failed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:386
+#, fuzzy
+#| msgid "Error installing application: {error}"
+msgid "Error establishing connection to server: {}"
+msgstr "Napaka ob nameščanju aplikacije: {error}"
+
+#: plinth/modules/backups/views.py:389
+msgid "Repository path is neither empty nor is an existing backups repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:396
+#, fuzzy
+#| msgid "Repository not found"
+msgid "Repository removed."
+msgstr "Ne najdem skladišča"
+
+#: plinth/modules/backups/views.py:471
 msgid "Repository removed. The remote backup itself was not deleted."
 msgstr "Skladišče je odstranjeno. Oddaljena rezervna kopija ni izbrisana."
 
-#: plinth/modules/backups/views.py:304
+#: plinth/modules/backups/views.py:481
 msgid "Unmounting failed!"
 msgstr "Odklapljanje ni uspelo!"
 
-#: plinth/modules/backups/views.py:313 plinth/modules/backups/views.py:317
+#: plinth/modules/backups/views.py:496 plinth/modules/backups/views.py:500
 msgid "Mounting failed"
 msgstr "Priklapljanje ni uspelo"
 
@@ -2097,7 +2186,13 @@ msgid ""
 "the initial setup is currently not supported."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:40
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:36
+msgid ""
+"New users can be registered from any client if public registration is "
+"enabled."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:45
 #, python-format
 msgid ""
 "\n"
@@ -5127,7 +5222,7 @@ msgstr ""
 msgid "Log in"
 msgstr ""
 
-#: plinth/templates/clients.html:28
+#: plinth/templates/clients.html:29
 msgid "Client Apps"
 msgstr ""
 
@@ -5324,3 +5419,6 @@ msgstr ""
 #: plinth/web_framework.py:186
 msgid "Gujarati"
 msgstr ""
+
+#~ msgid "Accessing the remote repository failed. Details: %(err)s"
+#~ msgstr "Dostop do oddaljenega skladiša ni uspel. Podrobnosti: %(err)s"
diff --git a/plinth/locale/sv/LC_MESSAGES/django.po b/plinth/locale/sv/LC_MESSAGES/django.po
index 26e719ee7..4b59765df 100644
--- a/plinth/locale/sv/LC_MESSAGES/django.po
+++ b/plinth/locale/sv/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-06-24 19:48-0400\n"
+"POT-Creation-Date: 2019-07-08 17:31-0400\n"
 "PO-Revision-Date: 2016-07-23 19:30+0000\n"
 "Last-Translator: Caly <caly@aktivix.org>\n"
 "Language-Team: Swedish <https://hosted.weblate.org/projects/freedombox/"
@@ -136,136 +136,164 @@ msgstr ""
 "interna nätverk. Du kan låta den vara inaktiverad för att förbättra din "
 "säkerhet, särskilt om du ansluter till ett osäkert lokalt nätverk."
 
-#: plinth/modules/backups/__init__.py:38 plinth/modules/backups/views.py:50
+#: plinth/modules/backups/__init__.py:41 plinth/modules/backups/views.py:54
 msgid "Backups"
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:41
+#: plinth/modules/backups/__init__.py:44
 msgid "Backups allows creating and managing backup archives."
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:49
+#: plinth/modules/backups/__init__.py:52
 #, fuzzy, python-brace-format
 #| msgid "{box_name} Manual"
 msgid "{box_name} storage"
 msgstr "{box_name} Manual"
 
-#: plinth/modules/backups/forms.py:38
+#: plinth/modules/backups/forms.py:47
 #, python-brace-format
 msgid "{app} (No data to backup)"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Included apps"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Apps to include in the backup"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:72
+#: plinth/modules/backups/forms.py:83
 msgid "Select the apps you want to restore"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:85
+#: plinth/modules/backups/forms.py:96
 msgid "Upload File"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:88
+#: plinth/modules/backups/forms.py:98
 msgid "Backup files have to be in .tar.gz format"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:89
+#: plinth/modules/backups/forms.py:99
 msgid "Select the backup file you want to upload"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:94
+#: plinth/modules/backups/forms.py:105
+msgid "Repository path format incorrect."
+msgstr ""
+
+#: plinth/modules/backups/forms.py:112
+#, fuzzy, python-brace-format
+#| msgid "Invalid server name"
+msgid "Invalid username: {username}"
+msgstr "Du har angett ett ogiltigt servernamn"
+
+#: plinth/modules/backups/forms.py:122
+#, fuzzy, python-brace-format
+#| msgid "Invalid hostname"
+msgid "Invalid hostname: {hostname}"
+msgstr "Ogiltigt värdnamn"
+
+#: plinth/modules/backups/forms.py:126
+#, python-brace-format
+msgid "Invalid directory path: {dir_path}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:132
 msgid "SSH Repository Path"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:95
+#: plinth/modules/backups/forms.py:133
 msgid ""
 "Path of a new or existing repository. Example: <i>user@host:~/path/to/repo/</"
 "i>"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:98
+#: plinth/modules/backups/forms.py:137
 #, fuzzy
 #| msgid "Please provide a password"
 msgid "SSH server password"
 msgstr "Ange ett lösenord"
 
-#: plinth/modules/backups/forms.py:99
+#: plinth/modules/backups/forms.py:138
 msgid ""
 "Password of the SSH Server.<br />SSH key-based authentication is not yet "
 "possible."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:104
+#: plinth/modules/backups/forms.py:142
 #, fuzzy
 #| msgid "Certificates (Let's Encrypt)"
 msgid "Encryption"
 msgstr "Certifikat (Let's Encrypt)"
 
-#: plinth/modules/backups/forms.py:106
+#: plinth/modules/backups/forms.py:143
 msgid ""
 "\"Key in Repository\" means that a password-protected key is stored with the "
 "backup."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:111 plinth/modules/networks/forms.py:304
+#: plinth/modules/backups/forms.py:147 plinth/modules/networks/forms.py:304
 msgid "Passphrase"
 msgstr "Lösenord"
 
-#: plinth/modules/backups/forms.py:112
+#: plinth/modules/backups/forms.py:148
 msgid "Passphrase; Only needed when using encryption."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:117
+#: plinth/modules/backups/forms.py:151
 #, fuzzy
 #| msgid "Passphrase"
 msgid "Confirm Passphrase"
 msgstr "Lösenord"
 
-#: plinth/modules/backups/forms.py:118
+#: plinth/modules/backups/forms.py:151
 msgid "Repeat the passphrase."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:139
+#: plinth/modules/backups/forms.py:162
 msgid "The entered encryption passphrases do not match"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:151
-#, python-format
-msgid "Accessing the remote repository failed. Details: %(err)s"
+#: plinth/modules/backups/forms.py:166
+msgid "Passphrase is needed for encryption."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:45
+#: plinth/modules/backups/forms.py:183
+msgid "Remote backup repository already exists."
+msgstr ""
+
+#: plinth/modules/backups/forms.py:189
+msgid "Select verified SSH public key"
+msgstr ""
+
+#: plinth/modules/backups/repository.py:46
 msgid ""
 "Connection refused - make sure you provided correct credentials and the "
 "server is running."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:51
+#: plinth/modules/backups/repository.py:53
 #, fuzzy
 #| msgid "Connection Type"
 msgid "Connection refused"
 msgstr "Anslutningstyp"
 
-#: plinth/modules/backups/repository.py:58
+#: plinth/modules/backups/repository.py:62
 msgid "Repository not found"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:65
+#: plinth/modules/backups/repository.py:70
 msgid "Incorrect encryption passphrase"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:70
+#: plinth/modules/backups/repository.py:76
 msgid "SSH access denied"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups.html:47
-msgid "Existing backups"
+msgid "Existing backup locations"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups.html:57
@@ -321,6 +349,7 @@ msgstr ""
 #: plinth/modules/backups/templates/backups_repository_add.html:45
 #: plinth/modules/backups/templates/backups_repository_remove.html:49
 #: plinth/modules/backups/templates/backups_restore.html:52
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:61
 #: plinth/modules/ikiwiki/templates/ikiwiki_delete.html:47
 #: plinth/modules/monkeysphere/templates/monkeysphere.html:67
 #: plinth/modules/networks/templates/connections_delete.html:41
@@ -343,7 +372,7 @@ msgid ""
 msgstr ""
 
 #: plinth/modules/backups/templates/backups_repository_remove.html:46
-#: plinth/modules/backups/views.py:286
+#: plinth/modules/backups/views.py:461
 msgid "Remove Repository"
 msgstr ""
 
@@ -354,7 +383,7 @@ msgid "Restore data from"
 msgstr "Ta bort %(name)s"
 
 #: plinth/modules/backups/templates/backups_restore.html:43
-#: plinth/modules/backups/views.py:186
+#: plinth/modules/backups/views.py:192
 msgid "Restore"
 msgstr ""
 
@@ -390,59 +419,108 @@ msgstr ""
 msgid "Upload file"
 msgstr ""
 
-#: plinth/modules/backups/views.py:53
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:40
+msgid "How to verify?"
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:45
+msgid ""
+"Run the following command on the SSH host machine. The output should match "
+"one of the provided options. You can also use dsa, ecdsa, ed25519 etc. "
+"instead of rsa, by choosing the corresponding file."
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:59
+msgid "Verify Host"
+msgstr ""
+
+#: plinth/modules/backups/views.py:57
 msgid "Upload"
 msgstr ""
 
-#: plinth/modules/backups/views.py:56 plinth/modules/ikiwiki/views.py:41
+#: plinth/modules/backups/views.py:60 plinth/modules/ikiwiki/views.py:41
 msgid "Create"
 msgstr "Skapa"
 
-#: plinth/modules/backups/views.py:84
+#: plinth/modules/backups/views.py:88
 msgid "Archive created."
 msgstr ""
 
-#: plinth/modules/backups/views.py:111
+#: plinth/modules/backups/views.py:117
 #, fuzzy
 #| msgid "Delete"
 msgid "Delete Archive"
 msgstr "Ta bort"
 
-#: plinth/modules/backups/views.py:123
+#: plinth/modules/backups/views.py:129
 #, fuzzy
 #| msgid "{name} deleted."
 msgid "Archive deleted."
 msgstr "{name} borttagen."
 
-#: plinth/modules/backups/views.py:174
+#: plinth/modules/backups/views.py:180
 msgid "Restored files from backup."
 msgstr ""
 
-#: plinth/modules/backups/views.py:198
+#: plinth/modules/backups/views.py:208
 msgid "No backup file found."
 msgstr ""
 
-#: plinth/modules/backups/views.py:206
+#: plinth/modules/backups/views.py:216
 msgid "Restore from uploaded file"
 msgstr ""
 
-#: plinth/modules/backups/views.py:260
-msgid "Added new repository."
-msgstr ""
-
-#: plinth/modules/backups/views.py:265
+#: plinth/modules/backups/views.py:272
 msgid "Create remote backup repository"
 msgstr ""
 
-#: plinth/modules/backups/views.py:296
+#: plinth/modules/backups/views.py:292
+msgid "Added new remote SSH repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:315
+msgid "Verify SSH hostkey"
+msgstr ""
+
+#: plinth/modules/backups/views.py:349
+msgid "SSH host already verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:358
+msgid "SSH host verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:382
+msgid "SSH host public key could not be verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:384
+msgid "Authentication to remote server failed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:386
+#, fuzzy
+#| msgid "Error installing application: {error}"
+msgid "Error establishing connection to server: {}"
+msgstr "Installationen misslyckades: {error}"
+
+#: plinth/modules/backups/views.py:389
+msgid "Repository path is neither empty nor is an existing backups repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:396
+msgid "Repository removed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:471
 msgid "Repository removed. The remote backup itself was not deleted."
 msgstr ""
 
-#: plinth/modules/backups/views.py:304
+#: plinth/modules/backups/views.py:481
 msgid "Unmounting failed!"
 msgstr ""
 
-#: plinth/modules/backups/views.py:313 plinth/modules/backups/views.py:317
+#: plinth/modules/backups/views.py:496 plinth/modules/backups/views.py:500
 msgid "Mounting failed"
 msgstr ""
 
@@ -2363,7 +2441,13 @@ msgid ""
 "the initial setup is currently not supported."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:40
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:36
+msgid ""
+"New users can be registered from any client if public registration is "
+"enabled."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:45
 #, python-format
 msgid ""
 "\n"
@@ -5607,7 +5691,7 @@ msgstr "Språkval"
 msgid "Log in"
 msgstr ""
 
-#: plinth/templates/clients.html:28
+#: plinth/templates/clients.html:29
 #, fuzzy
 #| msgid "BitTorrent Web Client (Deluge)"
 msgid "Client Apps"
diff --git a/plinth/locale/ta/LC_MESSAGES/django.po b/plinth/locale/ta/LC_MESSAGES/django.po
index 4ce5d3f7e..a773db00a 100644
--- a/plinth/locale/ta/LC_MESSAGES/django.po
+++ b/plinth/locale/ta/LC_MESSAGES/django.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-06-24 19:48-0400\n"
+"POT-Creation-Date: 2019-07-08 17:31-0400\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -118,127 +118,153 @@ msgid ""
 "network."
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:38 plinth/modules/backups/views.py:50
+#: plinth/modules/backups/__init__.py:41 plinth/modules/backups/views.py:54
 msgid "Backups"
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:41
+#: plinth/modules/backups/__init__.py:44
 msgid "Backups allows creating and managing backup archives."
 msgstr ""
 
-#: plinth/modules/backups/__init__.py:49
+#: plinth/modules/backups/__init__.py:52
 #, python-brace-format
 msgid "{box_name} storage"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:38
+#: plinth/modules/backups/forms.py:47
 #, python-brace-format
 msgid "{app} (No data to backup)"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Included apps"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Apps to include in the backup"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:72
+#: plinth/modules/backups/forms.py:83
 msgid "Select the apps you want to restore"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:85
+#: plinth/modules/backups/forms.py:96
 msgid "Upload File"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:88
+#: plinth/modules/backups/forms.py:98
 msgid "Backup files have to be in .tar.gz format"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:89
+#: plinth/modules/backups/forms.py:99
 msgid "Select the backup file you want to upload"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:94
+#: plinth/modules/backups/forms.py:105
+msgid "Repository path format incorrect."
+msgstr ""
+
+#: plinth/modules/backups/forms.py:112
+#, python-brace-format
+msgid "Invalid username: {username}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:122
+#, python-brace-format
+msgid "Invalid hostname: {hostname}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:126
+#, python-brace-format
+msgid "Invalid directory path: {dir_path}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:132
 msgid "SSH Repository Path"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:95
+#: plinth/modules/backups/forms.py:133
 msgid ""
 "Path of a new or existing repository. Example: <i>user@host:~/path/to/repo/</"
 "i>"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:98
+#: plinth/modules/backups/forms.py:137
 msgid "SSH server password"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:99
+#: plinth/modules/backups/forms.py:138
 msgid ""
 "Password of the SSH Server.<br />SSH key-based authentication is not yet "
 "possible."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:104
+#: plinth/modules/backups/forms.py:142
 msgid "Encryption"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:106
+#: plinth/modules/backups/forms.py:143
 msgid ""
 "\"Key in Repository\" means that a password-protected key is stored with the "
 "backup."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:111 plinth/modules/networks/forms.py:304
+#: plinth/modules/backups/forms.py:147 plinth/modules/networks/forms.py:304
 msgid "Passphrase"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:112
+#: plinth/modules/backups/forms.py:148
 msgid "Passphrase; Only needed when using encryption."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:117
+#: plinth/modules/backups/forms.py:151
 msgid "Confirm Passphrase"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:118
+#: plinth/modules/backups/forms.py:151
 msgid "Repeat the passphrase."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:139
+#: plinth/modules/backups/forms.py:162
 msgid "The entered encryption passphrases do not match"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:151
-#, python-format
-msgid "Accessing the remote repository failed. Details: %(err)s"
+#: plinth/modules/backups/forms.py:166
+msgid "Passphrase is needed for encryption."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:45
+#: plinth/modules/backups/forms.py:183
+msgid "Remote backup repository already exists."
+msgstr ""
+
+#: plinth/modules/backups/forms.py:189
+msgid "Select verified SSH public key"
+msgstr ""
+
+#: plinth/modules/backups/repository.py:46
 msgid ""
 "Connection refused - make sure you provided correct credentials and the "
 "server is running."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:51
+#: plinth/modules/backups/repository.py:53
 msgid "Connection refused"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:58
+#: plinth/modules/backups/repository.py:62
 msgid "Repository not found"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:65
+#: plinth/modules/backups/repository.py:70
 msgid "Incorrect encryption passphrase"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:70
+#: plinth/modules/backups/repository.py:76
 msgid "SSH access denied"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups.html:47
-msgid "Existing backups"
+msgid "Existing backup locations"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups.html:57
@@ -291,6 +317,7 @@ msgstr ""
 #: plinth/modules/backups/templates/backups_repository_add.html:45
 #: plinth/modules/backups/templates/backups_repository_remove.html:49
 #: plinth/modules/backups/templates/backups_restore.html:52
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:61
 #: plinth/modules/ikiwiki/templates/ikiwiki_delete.html:47
 #: plinth/modules/monkeysphere/templates/monkeysphere.html:67
 #: plinth/modules/networks/templates/connections_delete.html:41
@@ -313,7 +340,7 @@ msgid ""
 msgstr ""
 
 #: plinth/modules/backups/templates/backups_repository_remove.html:46
-#: plinth/modules/backups/views.py:286
+#: plinth/modules/backups/views.py:461
 msgid "Remove Repository"
 msgstr ""
 
@@ -322,7 +349,7 @@ msgid "Restore data from"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups_restore.html:43
-#: plinth/modules/backups/views.py:186
+#: plinth/modules/backups/views.py:192
 msgid "Restore"
 msgstr ""
 
@@ -358,55 +385,102 @@ msgstr ""
 msgid "Upload file"
 msgstr ""
 
-#: plinth/modules/backups/views.py:53
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:40
+msgid "How to verify?"
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:45
+msgid ""
+"Run the following command on the SSH host machine. The output should match "
+"one of the provided options. You can also use dsa, ecdsa, ed25519 etc. "
+"instead of rsa, by choosing the corresponding file."
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:59
+msgid "Verify Host"
+msgstr ""
+
+#: plinth/modules/backups/views.py:57
 msgid "Upload"
 msgstr ""
 
-#: plinth/modules/backups/views.py:56 plinth/modules/ikiwiki/views.py:41
+#: plinth/modules/backups/views.py:60 plinth/modules/ikiwiki/views.py:41
 msgid "Create"
 msgstr ""
 
-#: plinth/modules/backups/views.py:84
+#: plinth/modules/backups/views.py:88
 msgid "Archive created."
 msgstr ""
 
-#: plinth/modules/backups/views.py:111
+#: plinth/modules/backups/views.py:117
 msgid "Delete Archive"
 msgstr ""
 
-#: plinth/modules/backups/views.py:123
+#: plinth/modules/backups/views.py:129
 msgid "Archive deleted."
 msgstr ""
 
-#: plinth/modules/backups/views.py:174
+#: plinth/modules/backups/views.py:180
 msgid "Restored files from backup."
 msgstr ""
 
-#: plinth/modules/backups/views.py:198
+#: plinth/modules/backups/views.py:208
 msgid "No backup file found."
 msgstr ""
 
-#: plinth/modules/backups/views.py:206
+#: plinth/modules/backups/views.py:216
 msgid "Restore from uploaded file"
 msgstr ""
 
-#: plinth/modules/backups/views.py:260
-msgid "Added new repository."
-msgstr ""
-
-#: plinth/modules/backups/views.py:265
+#: plinth/modules/backups/views.py:272
 msgid "Create remote backup repository"
 msgstr ""
 
-#: plinth/modules/backups/views.py:296
+#: plinth/modules/backups/views.py:292
+msgid "Added new remote SSH repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:315
+msgid "Verify SSH hostkey"
+msgstr ""
+
+#: plinth/modules/backups/views.py:349
+msgid "SSH host already verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:358
+msgid "SSH host verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:382
+msgid "SSH host public key could not be verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:384
+msgid "Authentication to remote server failed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:386
+msgid "Error establishing connection to server: {}"
+msgstr ""
+
+#: plinth/modules/backups/views.py:389
+msgid "Repository path is neither empty nor is an existing backups repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:396
+msgid "Repository removed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:471
 msgid "Repository removed. The remote backup itself was not deleted."
 msgstr ""
 
-#: plinth/modules/backups/views.py:304
+#: plinth/modules/backups/views.py:481
 msgid "Unmounting failed!"
 msgstr ""
 
-#: plinth/modules/backups/views.py:313 plinth/modules/backups/views.py:317
+#: plinth/modules/backups/views.py:496 plinth/modules/backups/views.py:500
 msgid "Mounting failed"
 msgstr ""
 
@@ -2036,7 +2110,13 @@ msgid ""
 "the initial setup is currently not supported."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:40
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:36
+msgid ""
+"New users can be registered from any client if public registration is "
+"enabled."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:45
 #, python-format
 msgid ""
 "\n"
@@ -5066,7 +5146,7 @@ msgstr ""
 msgid "Log in"
 msgstr ""
 
-#: plinth/templates/clients.html:28
+#: plinth/templates/clients.html:29
 msgid "Client Apps"
 msgstr ""
 
diff --git a/plinth/locale/te/LC_MESSAGES/django.po b/plinth/locale/te/LC_MESSAGES/django.po
index 2b1b70c68..9e9408916 100644
--- a/plinth/locale/te/LC_MESSAGES/django.po
+++ b/plinth/locale/te/LC_MESSAGES/django.po
@@ -9,7 +9,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: FreedomBox UI\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-06-24 19:48-0400\n"
+"POT-Creation-Date: 2019-07-08 17:31-0400\n"
 "PO-Revision-Date: 2019-05-13 23:19+0000\n"
 "Last-Translator: Joseph Nuthalapati <njoseph@riseup.net>\n"
 "Language-Team: Telugu <https://hosted.weblate.org/projects/freedombox/plinth/"
@@ -125,138 +125,166 @@ msgstr ""
 "ప్రకటన అనేది అత్యవసరమినది కాదు. మరియు అంతర్గత నెట్‌వర్క్లలో మాత్రమే పని చేస్తుంది. మీ భద్రతా కారణాల కోసం "
 "పని చేయకుండా చెయ్యచ్చు ముఖ్యంగా మీరు విరుద్ధమైన స్థానిక నెట్‌వర్క్ లో కనెక్ట్ ఆవతున్నప్పుడు."
 
-#: plinth/modules/backups/__init__.py:38 plinth/modules/backups/views.py:50
+#: plinth/modules/backups/__init__.py:41 plinth/modules/backups/views.py:54
 msgid "Backups"
 msgstr "బ్యాకప్స్"
 
-#: plinth/modules/backups/__init__.py:41
+#: plinth/modules/backups/__init__.py:44
 msgid "Backups allows creating and managing backup archives."
 msgstr "బ్యాకప్స్ అనేది బ్యాకప్ భాండాగారాలను సృష్టించడానికి మరియి నిర్వహించడానికి ఉపయోగపడుతుంది."
 
-#: plinth/modules/backups/__init__.py:49
+#: plinth/modules/backups/__init__.py:52
 #, fuzzy, python-brace-format
 #| msgid "{box_name} Manual"
 msgid "{box_name} storage"
 msgstr "{box_name} కరదీపిక"
 
-#: plinth/modules/backups/forms.py:38
+#: plinth/modules/backups/forms.py:47
 #, python-brace-format
 msgid "{app} (No data to backup)"
 msgstr "{app}(బ్యాకప్ చేయడానికి డేటా లేదు)"
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Included apps"
 msgstr "చేర్చబడిన అనువర్తనాలు"
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Apps to include in the backup"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:72
+#: plinth/modules/backups/forms.py:83
 #, fuzzy
 #| msgid "The subdomain you want to register"
 msgid "Select the apps you want to restore"
 msgstr "మీరు నమోదు చేయదల్చిన ఉప డోమైన్"
 
-#: plinth/modules/backups/forms.py:85
+#: plinth/modules/backups/forms.py:96
 msgid "Upload File"
 msgstr "ఫైలు ఎగుమతించండి"
 
-#: plinth/modules/backups/forms.py:88
+#: plinth/modules/backups/forms.py:98
 msgid "Backup files have to be in .tar.gz format"
 msgstr "బ్యాకప్ చేయవలసిన దస్త్రం .టార్(.tar)  లేదా .జిజెడ్(.gz) రూపం లొ ఉండాలి"
 
-#: plinth/modules/backups/forms.py:89
+#: plinth/modules/backups/forms.py:99
 msgid "Select the backup file you want to upload"
 msgstr "మీరు అప్ లోడ్ చేయాలని అనుకుంటున్న బ్యాకప్ ఫైలును ఎంచుకోండి"
 
-#: plinth/modules/backups/forms.py:94
+#: plinth/modules/backups/forms.py:105
+msgid "Repository path format incorrect."
+msgstr ""
+
+#: plinth/modules/backups/forms.py:112
+#, fuzzy, python-brace-format
+#| msgid "Invalid server name"
+msgid "Invalid username: {username}"
+msgstr "సేవిక పేరు చెలదు"
+
+#: plinth/modules/backups/forms.py:122
+#, fuzzy, python-brace-format
+#| msgid "Invalid hostname"
+msgid "Invalid hostname: {hostname}"
+msgstr "ఆతిథ్యనామం చెల్లనిది"
+
+#: plinth/modules/backups/forms.py:126
+#, python-brace-format
+msgid "Invalid directory path: {dir_path}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:132
 msgid "SSH Repository Path"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:95
+#: plinth/modules/backups/forms.py:133
 msgid ""
 "Path of a new or existing repository. Example: <i>user@host:~/path/to/repo/</"
 "i>"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:98
+#: plinth/modules/backups/forms.py:137
 msgid "SSH server password"
 msgstr "SSH సర్వర్ పాస్ వర్డ్"
 
-#: plinth/modules/backups/forms.py:99
+#: plinth/modules/backups/forms.py:138
 msgid ""
 "Password of the SSH Server.<br />SSH key-based authentication is not yet "
 "possible."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:104
+#: plinth/modules/backups/forms.py:142
 #, fuzzy
 #| msgid "Description"
 msgid "Encryption"
 msgstr "వివరణ"
 
-#: plinth/modules/backups/forms.py:106
+#: plinth/modules/backups/forms.py:143
 msgid ""
 "\"Key in Repository\" means that a password-protected key is stored with the "
 "backup."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:111 plinth/modules/networks/forms.py:304
+#: plinth/modules/backups/forms.py:147 plinth/modules/networks/forms.py:304
 msgid "Passphrase"
 msgstr "రహస్యపదం"
 
-#: plinth/modules/backups/forms.py:112
+#: plinth/modules/backups/forms.py:148
 msgid "Passphrase; Only needed when using encryption."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:117
+#: plinth/modules/backups/forms.py:151
 #, fuzzy
 #| msgid "Passphrase"
 msgid "Confirm Passphrase"
 msgstr "రహస్యపదం"
 
-#: plinth/modules/backups/forms.py:118
+#: plinth/modules/backups/forms.py:151
 msgid "Repeat the passphrase."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:139
+#: plinth/modules/backups/forms.py:162
 msgid "The entered encryption passphrases do not match"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:151
-#, python-format
-msgid "Accessing the remote repository failed. Details: %(err)s"
+#: plinth/modules/backups/forms.py:166
+msgid "Passphrase is needed for encryption."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:45
+#: plinth/modules/backups/forms.py:183
+msgid "Remote backup repository already exists."
+msgstr ""
+
+#: plinth/modules/backups/forms.py:189
+msgid "Select verified SSH public key"
+msgstr ""
+
+#: plinth/modules/backups/repository.py:46
 msgid ""
 "Connection refused - make sure you provided correct credentials and the "
 "server is running."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:51
+#: plinth/modules/backups/repository.py:53
 #, fuzzy
 #| msgid "Connection Type"
 msgid "Connection refused"
 msgstr "అనుసంధాన రకం"
 
-#: plinth/modules/backups/repository.py:58
+#: plinth/modules/backups/repository.py:62
 msgid "Repository not found"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:65
+#: plinth/modules/backups/repository.py:70
 msgid "Incorrect encryption passphrase"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:70
+#: plinth/modules/backups/repository.py:76
 msgid "SSH access denied"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups.html:47
 #, fuzzy
 #| msgid "Existing custom services"
-msgid "Existing backups"
+msgid "Existing backup locations"
 msgstr "ప్రస్థుత కస్టమ్ సేవలు"
 
 #: plinth/modules/backups/templates/backups.html:57
@@ -318,6 +346,7 @@ msgstr "వినియోగదారుని సృష్టించు"
 #: plinth/modules/backups/templates/backups_repository_add.html:45
 #: plinth/modules/backups/templates/backups_repository_remove.html:49
 #: plinth/modules/backups/templates/backups_restore.html:52
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:61
 #: plinth/modules/ikiwiki/templates/ikiwiki_delete.html:47
 #: plinth/modules/monkeysphere/templates/monkeysphere.html:67
 #: plinth/modules/networks/templates/connections_delete.html:41
@@ -340,7 +369,7 @@ msgid ""
 msgstr ""
 
 #: plinth/modules/backups/templates/backups_repository_remove.html:46
-#: plinth/modules/backups/views.py:286
+#: plinth/modules/backups/views.py:461
 msgid "Remove Repository"
 msgstr ""
 
@@ -351,7 +380,7 @@ msgid "Restore data from"
 msgstr "%(name)s తొలగించు"
 
 #: plinth/modules/backups/templates/backups_restore.html:43
-#: plinth/modules/backups/views.py:186
+#: plinth/modules/backups/views.py:192
 #, fuzzy
 #| msgid "reStore"
 msgid "Restore"
@@ -393,63 +422,112 @@ msgstr ""
 msgid "Upload file"
 msgstr "ఫైలు ఎగుమతించండి"
 
-#: plinth/modules/backups/views.py:53
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:40
+msgid "How to verify?"
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:45
+msgid ""
+"Run the following command on the SSH host machine. The output should match "
+"one of the provided options. You can also use dsa, ecdsa, ed25519 etc. "
+"instead of rsa, by choosing the corresponding file."
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:59
+msgid "Verify Host"
+msgstr ""
+
+#: plinth/modules/backups/views.py:57
 msgid "Upload"
 msgstr "ఎగుమతించండి"
 
-#: plinth/modules/backups/views.py:56 plinth/modules/ikiwiki/views.py:41
+#: plinth/modules/backups/views.py:60 plinth/modules/ikiwiki/views.py:41
 msgid "Create"
 msgstr "సృష్టించు"
 
-#: plinth/modules/backups/views.py:84
+#: plinth/modules/backups/views.py:88
 msgid "Archive created."
 msgstr "భాండాగారాము సృజింపబడింది."
 
-#: plinth/modules/backups/views.py:111
+#: plinth/modules/backups/views.py:117
 #, fuzzy
 #| msgid "Delete All"
 msgid "Delete Archive"
 msgstr "అన్నింటిని  తొలగించు"
 
-#: plinth/modules/backups/views.py:123
+#: plinth/modules/backups/views.py:129
 #, fuzzy
 #| msgid "{name} deleted."
 msgid "Archive deleted."
 msgstr "{name} తొలగించబడింది."
 
-#: plinth/modules/backups/views.py:174
+#: plinth/modules/backups/views.py:180
 msgid "Restored files from backup."
 msgstr ""
 
-#: plinth/modules/backups/views.py:198
+#: plinth/modules/backups/views.py:208
 #, fuzzy
 #| msgid "Name for new backup archive."
 msgid "No backup file found."
 msgstr "కొత్త బ్యాకప్ ఆర్కైవుకి పేరు."
 
-#: plinth/modules/backups/views.py:206
+#: plinth/modules/backups/views.py:216
 msgid "Restore from uploaded file"
 msgstr ""
 
-#: plinth/modules/backups/views.py:260
-#, fuzzy
-#| msgid "Add new introducer"
-msgid "Added new repository."
-msgstr "కొత్త పరిచయకర్తని జోడించండి"
-
-#: plinth/modules/backups/views.py:265
+#: plinth/modules/backups/views.py:272
 msgid "Create remote backup repository"
 msgstr ""
 
-#: plinth/modules/backups/views.py:296
+#: plinth/modules/backups/views.py:292
+#, fuzzy
+#| msgid "Add new introducer"
+msgid "Added new remote SSH repository."
+msgstr "కొత్త పరిచయకర్తని జోడించండి"
+
+#: plinth/modules/backups/views.py:315
+msgid "Verify SSH hostkey"
+msgstr ""
+
+#: plinth/modules/backups/views.py:349
+msgid "SSH host already verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:358
+msgid "SSH host verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:382
+msgid "SSH host public key could not be verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:384
+msgid "Authentication to remote server failed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:386
+#, fuzzy
+#| msgid "Error installing application: {error}"
+msgid "Error establishing connection to server: {}"
+msgstr "అనువర్తనం స్థాపించుటలో దోషం: {error}"
+
+#: plinth/modules/backups/views.py:389
+msgid "Repository path is neither empty nor is an existing backups repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:396
+msgid "Repository removed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:471
 msgid "Repository removed. The remote backup itself was not deleted."
 msgstr ""
 
-#: plinth/modules/backups/views.py:304
+#: plinth/modules/backups/views.py:481
 msgid "Unmounting failed!"
 msgstr ""
 
-#: plinth/modules/backups/views.py:313 plinth/modules/backups/views.py:317
+#: plinth/modules/backups/views.py:496 plinth/modules/backups/views.py:500
 msgid "Mounting failed"
 msgstr ""
 
@@ -2386,7 +2464,13 @@ msgstr ""
 "<em>@వినియోగదారిడి పేరు:%(domain_name)s</em>ఇలా కనిపిస్తుంది. ప్రారంభ సెట్టింగు తర్వాత డొమైన్ పేరు "
 "మార్చడం ప్రస్తుతం మద్దతు లేదు."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:40
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:36
+msgid ""
+"New users can be registered from any client if public registration is "
+"enabled."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:45
 #, python-format
 msgid ""
 "\n"
@@ -5826,7 +5910,7 @@ msgstr "భాష"
 msgid "Log in"
 msgstr "లోనికి ప్రవేశించండి"
 
-#: plinth/templates/clients.html:28
+#: plinth/templates/clients.html:29
 #, fuzzy
 msgid "Client Apps"
 msgstr "ఐ ర్ సి క్లయింట్ (Quassel)"
diff --git a/plinth/locale/tr/LC_MESSAGES/django.po b/plinth/locale/tr/LC_MESSAGES/django.po
index 4629ed4d7..5c42a315a 100644
--- a/plinth/locale/tr/LC_MESSAGES/django.po
+++ b/plinth/locale/tr/LC_MESSAGES/django.po
@@ -6,7 +6,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: \n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-06-24 19:48-0400\n"
+"POT-Creation-Date: 2019-07-08 17:31-0400\n"
 "PO-Revision-Date: 2019-06-18 22:01+0000\n"
 "Last-Translator: Mesut Akcan <makcan@gmail.com>\n"
 "Language-Team: Turkish <https://hosted.weblate.org/projects/freedombox/"
@@ -126,64 +126,87 @@ msgstr ""
 "çalışır. Özellikle düşman bir yerel ağa bağlanıldığında güvenliği arttırmak "
 "için devre dışı bırakılabilir."
 
-#: plinth/modules/backups/__init__.py:38 plinth/modules/backups/views.py:50
+#: plinth/modules/backups/__init__.py:41 plinth/modules/backups/views.py:54
 msgid "Backups"
 msgstr "Yedeklemeler"
 
-#: plinth/modules/backups/__init__.py:41
+#: plinth/modules/backups/__init__.py:44
 msgid "Backups allows creating and managing backup archives."
 msgstr "Yedeklemeler, yedekleme arşivleri oluşturmayı ve yönetmeyi sağlar."
 
-#: plinth/modules/backups/__init__.py:49
+#: plinth/modules/backups/__init__.py:52
 #, python-brace-format
 msgid "{box_name} storage"
 msgstr "{box_name} depolama"
 
-#: plinth/modules/backups/forms.py:38
+#: plinth/modules/backups/forms.py:47
 #, python-brace-format
 msgid "{app} (No data to backup)"
 msgstr "{app} (Yedeklenecek veri yok)"
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Included apps"
 msgstr "Dahil edilen uygulamalar"
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Apps to include in the backup"
 msgstr "Yedeklemeye dahil edilecek uygulamalar"
 
-#: plinth/modules/backups/forms.py:72
+#: plinth/modules/backups/forms.py:83
 msgid "Select the apps you want to restore"
 msgstr "Geri yüklemek istediğiniz uygulamaları seçin"
 
-#: plinth/modules/backups/forms.py:85
+#: plinth/modules/backups/forms.py:96
 msgid "Upload File"
 msgstr "Dosya Yükle"
 
-#: plinth/modules/backups/forms.py:88
+#: plinth/modules/backups/forms.py:98
 msgid "Backup files have to be in .tar.gz format"
 msgstr "Yedekleme dosyaları .tar.gz türünde olmalıdır."
 
-#: plinth/modules/backups/forms.py:89
+#: plinth/modules/backups/forms.py:99
 msgid "Select the backup file you want to upload"
 msgstr "Yüklemek istediğiniz yedekleme dosyasını seçiniz"
 
-#: plinth/modules/backups/forms.py:94
+#: plinth/modules/backups/forms.py:105
+#, fuzzy
+#| msgid "Repository not found"
+msgid "Repository path format incorrect."
+msgstr "Havuz bulunamadı"
+
+#: plinth/modules/backups/forms.py:112
+#, fuzzy, python-brace-format
+#| msgid "Invalid server name"
+msgid "Invalid username: {username}"
+msgstr "Geçersiz sunucu ismi"
+
+#: plinth/modules/backups/forms.py:122
+#, fuzzy, python-brace-format
+#| msgid "Invalid hostname"
+msgid "Invalid hostname: {hostname}"
+msgstr "Geçersiz makine ismi"
+
+#: plinth/modules/backups/forms.py:126
+#, python-brace-format
+msgid "Invalid directory path: {dir_path}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:132
 msgid "SSH Repository Path"
 msgstr "SSH havuzu yolu"
 
-#: plinth/modules/backups/forms.py:95
+#: plinth/modules/backups/forms.py:133
 msgid ""
 "Path of a new or existing repository. Example: <i>user@host:~/path/to/repo/</"
 "i>"
 msgstr ""
 "Yeni veya varolan bir havuz yolu. Örnek: <i>user@host:~/path/to/repo/</i>"
 
-#: plinth/modules/backups/forms.py:98
+#: plinth/modules/backups/forms.py:137
 msgid "SSH server password"
 msgstr "SSH sunucu parolası"
 
-#: plinth/modules/backups/forms.py:99
+#: plinth/modules/backups/forms.py:138
 msgid ""
 "Password of the SSH Server.<br />SSH key-based authentication is not yet "
 "possible."
@@ -191,11 +214,11 @@ msgstr ""
 "SSH sunucusunun parolası. <br />SSH anahtar tabanlı kimlik doğrulaması henüz "
 "mümkün değildir."
 
-#: plinth/modules/backups/forms.py:104
+#: plinth/modules/backups/forms.py:142
 msgid "Encryption"
 msgstr "Şifreleme"
 
-#: plinth/modules/backups/forms.py:106
+#: plinth/modules/backups/forms.py:143
 msgid ""
 "\"Key in Repository\" means that a password-protected key is stored with the "
 "backup."
@@ -203,32 +226,43 @@ msgstr ""
 "\"Havuz anahtarı\", parola korumalı bir anahtarın yedek ile depolanacağı "
 "anlamına gelir."
 
-#: plinth/modules/backups/forms.py:111 plinth/modules/networks/forms.py:304
+#: plinth/modules/backups/forms.py:147 plinth/modules/networks/forms.py:304
 msgid "Passphrase"
 msgstr "Parola"
 
-#: plinth/modules/backups/forms.py:112
+#: plinth/modules/backups/forms.py:148
 msgid "Passphrase; Only needed when using encryption."
 msgstr "Parola; Yalnızca şifreleme kullanırken gerekli."
 
-#: plinth/modules/backups/forms.py:117
+#: plinth/modules/backups/forms.py:151
 msgid "Confirm Passphrase"
 msgstr "Parolayı Onayla"
 
-#: plinth/modules/backups/forms.py:118
+#: plinth/modules/backups/forms.py:151
 msgid "Repeat the passphrase."
 msgstr "Parolayı tekrarlayın."
 
-#: plinth/modules/backups/forms.py:139
+#: plinth/modules/backups/forms.py:162
 msgid "The entered encryption passphrases do not match"
 msgstr "Girilen şifreleme parolaları eşleşmiyor"
 
-#: plinth/modules/backups/forms.py:151
-#, python-format
-msgid "Accessing the remote repository failed. Details: %(err)s"
-msgstr "Uzak depoya erişilemedi. Ayrıntılar: %(err)s"
+#: plinth/modules/backups/forms.py:166
+#, fuzzy
+#| msgid "Passphrase; Only needed when using encryption."
+msgid "Passphrase is needed for encryption."
+msgstr "Parola; Yalnızca şifreleme kullanırken gerekli."
 
-#: plinth/modules/backups/repository.py:45
+#: plinth/modules/backups/forms.py:183
+#, fuzzy
+#| msgid "Create remote backup repository"
+msgid "Remote backup repository already exists."
+msgstr "Uzak yedekleme deposu oluştur"
+
+#: plinth/modules/backups/forms.py:189
+msgid "Select verified SSH public key"
+msgstr ""
+
+#: plinth/modules/backups/repository.py:46
 msgid ""
 "Connection refused - make sure you provided correct credentials and the "
 "server is running."
@@ -236,24 +270,26 @@ msgstr ""
 "Bağlantı reddedildi - doğru kimlik bilgilerini girdiğinizden ve sunucunun "
 "çalıştığından emin olun."
 
-#: plinth/modules/backups/repository.py:51
+#: plinth/modules/backups/repository.py:53
 msgid "Connection refused"
 msgstr "Bağlantı reddedildi"
 
-#: plinth/modules/backups/repository.py:58
+#: plinth/modules/backups/repository.py:62
 msgid "Repository not found"
 msgstr "Havuz bulunamadı"
 
-#: plinth/modules/backups/repository.py:65
+#: plinth/modules/backups/repository.py:70
 msgid "Incorrect encryption passphrase"
 msgstr "Yanlış şifreleme parolası"
 
-#: plinth/modules/backups/repository.py:70
+#: plinth/modules/backups/repository.py:76
 msgid "SSH access denied"
 msgstr "SSH erişimi reddedildi"
 
 #: plinth/modules/backups/templates/backups.html:47
-msgid "Existing backups"
+#, fuzzy
+#| msgid "Existing backups"
+msgid "Existing backup locations"
 msgstr "Mevcut yedeklemeler"
 
 #: plinth/modules/backups/templates/backups.html:57
@@ -309,6 +345,7 @@ msgstr "Depo oluştur"
 #: plinth/modules/backups/templates/backups_repository_add.html:45
 #: plinth/modules/backups/templates/backups_repository_remove.html:49
 #: plinth/modules/backups/templates/backups_restore.html:52
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:61
 #: plinth/modules/ikiwiki/templates/ikiwiki_delete.html:47
 #: plinth/modules/monkeysphere/templates/monkeysphere.html:67
 #: plinth/modules/networks/templates/connections_delete.html:41
@@ -336,7 +373,7 @@ msgstr ""
 "    "
 
 #: plinth/modules/backups/templates/backups_repository_remove.html:46
-#: plinth/modules/backups/views.py:286
+#: plinth/modules/backups/views.py:461
 msgid "Remove Repository"
 msgstr "Depoyu kaldır"
 
@@ -345,7 +382,7 @@ msgid "Restore data from"
 msgstr "Verileri şuradan geri yükle"
 
 #: plinth/modules/backups/templates/backups_restore.html:43
-#: plinth/modules/backups/views.py:186
+#: plinth/modules/backups/views.py:192
 msgid "Restore"
 msgstr "Geri yükle"
 
@@ -388,55 +425,108 @@ msgstr ""
 msgid "Upload file"
 msgstr "Dosya Yükle"
 
-#: plinth/modules/backups/views.py:53
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:40
+msgid "How to verify?"
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:45
+msgid ""
+"Run the following command on the SSH host machine. The output should match "
+"one of the provided options. You can also use dsa, ecdsa, ed25519 etc. "
+"instead of rsa, by choosing the corresponding file."
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:59
+msgid "Verify Host"
+msgstr ""
+
+#: plinth/modules/backups/views.py:57
 msgid "Upload"
 msgstr "Yükle"
 
-#: plinth/modules/backups/views.py:56 plinth/modules/ikiwiki/views.py:41
+#: plinth/modules/backups/views.py:60 plinth/modules/ikiwiki/views.py:41
 msgid "Create"
 msgstr "Oluştur"
 
-#: plinth/modules/backups/views.py:84
+#: plinth/modules/backups/views.py:88
 msgid "Archive created."
 msgstr "Arşiv oluşturuldu."
 
-#: plinth/modules/backups/views.py:111
+#: plinth/modules/backups/views.py:117
 msgid "Delete Archive"
 msgstr "Arşivi Sil"
 
-#: plinth/modules/backups/views.py:123
+#: plinth/modules/backups/views.py:129
 msgid "Archive deleted."
 msgstr "Arşiv silindi."
 
-#: plinth/modules/backups/views.py:174
+#: plinth/modules/backups/views.py:180
 msgid "Restored files from backup."
 msgstr "Yedeklemeden geri yüklenen dosyalar."
 
-#: plinth/modules/backups/views.py:198
+#: plinth/modules/backups/views.py:208
 msgid "No backup file found."
 msgstr "Yedekleme dosyası bulunamadı."
 
-#: plinth/modules/backups/views.py:206
+#: plinth/modules/backups/views.py:216
 msgid "Restore from uploaded file"
 msgstr "Yüklenen dosyadan geri yükle"
 
-#: plinth/modules/backups/views.py:260
-msgid "Added new repository."
-msgstr "Yeni depo eklendi."
-
-#: plinth/modules/backups/views.py:265
+#: plinth/modules/backups/views.py:272
 msgid "Create remote backup repository"
 msgstr "Uzak yedekleme deposu oluştur"
 
-#: plinth/modules/backups/views.py:296
+#: plinth/modules/backups/views.py:292
+#, fuzzy
+#| msgid "Added new repository."
+msgid "Added new remote SSH repository."
+msgstr "Yeni depo eklendi."
+
+#: plinth/modules/backups/views.py:315
+msgid "Verify SSH hostkey"
+msgstr ""
+
+#: plinth/modules/backups/views.py:349
+msgid "SSH host already verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:358
+msgid "SSH host verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:382
+msgid "SSH host public key could not be verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:384
+msgid "Authentication to remote server failed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:386
+#, fuzzy
+#| msgid "Error installing application: {error}"
+msgid "Error establishing connection to server: {}"
+msgstr "Uygulamanın kurulmasında hata: {error}"
+
+#: plinth/modules/backups/views.py:389
+msgid "Repository path is neither empty nor is an existing backups repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:396
+#, fuzzy
+#| msgid "Repository not found"
+msgid "Repository removed."
+msgstr "Havuz bulunamadı"
+
+#: plinth/modules/backups/views.py:471
 msgid "Repository removed. The remote backup itself was not deleted."
 msgstr "Depo kaldırıldı. Uzaktan yedeklemenin kendisi silinmedi."
 
-#: plinth/modules/backups/views.py:304
+#: plinth/modules/backups/views.py:481
 msgid "Unmounting failed!"
 msgstr "Çıkarma işlemi başarısız oldu!"
 
-#: plinth/modules/backups/views.py:313 plinth/modules/backups/views.py:317
+#: plinth/modules/backups/views.py:496 plinth/modules/backups/views.py:500
 msgid "Mounting failed"
 msgstr "Montaj başarısız oldu"
 
@@ -2451,7 +2541,13 @@ msgstr ""
 "kimlikleri <em>@kullanıcıismi:%(domain_name)s</em> şeklinde olacaktır. Alan "
 "adını ilk yapılandırmadan sonra değiştirmek şimdilik desteklenmemektedir."
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:40
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:36
+msgid ""
+"New users can be registered from any client if public registration is "
+"enabled."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:45
 #, python-format
 msgid ""
 "\n"
@@ -6017,7 +6113,7 @@ msgstr "Lisan"
 msgid "Log in"
 msgstr "Giriş yap"
 
-#: plinth/templates/clients.html:28
+#: plinth/templates/clients.html:29
 msgid "Client Apps"
 msgstr "İstemci Uygulamalar"
 
@@ -6235,6 +6331,9 @@ msgstr "Uygulama devre dışı bırakıldı"
 msgid "Gujarati"
 msgstr ""
 
+#~ msgid "Accessing the remote repository failed. Details: %(err)s"
+#~ msgstr "Uzak depoya erişilemedi. Ayrıntılar: %(err)s"
+
 #~ msgid "Tor Anonymity Network"
 #~ msgstr "Tor Anonimlik Ağı"
 
diff --git a/plinth/locale/uk/LC_MESSAGES/django.po b/plinth/locale/uk/LC_MESSAGES/django.po
index c87eb834a..395f556cf 100644
--- a/plinth/locale/uk/LC_MESSAGES/django.po
+++ b/plinth/locale/uk/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-06-24 19:48-0400\n"
+"POT-Creation-Date: 2019-07-08 17:31-0400\n"
 "PO-Revision-Date: 2019-01-04 17:06+0000\n"
 "Last-Translator: prolinux ukraine <prolinux@ukr.net>\n"
 "Language-Team: Ukrainian <https://hosted.weblate.org/projects/freedombox/"
@@ -127,65 +127,86 @@ msgstr ""
 "працює лише у внутрішніх мережах.  Це можна виключити, для підвищення "
 "безпеки, особливо при підключенні до не довіреної мережі."
 
-#: plinth/modules/backups/__init__.py:38 plinth/modules/backups/views.py:50
+#: plinth/modules/backups/__init__.py:41 plinth/modules/backups/views.py:54
 msgid "Backups"
 msgstr "Резервні копії"
 
-#: plinth/modules/backups/__init__.py:41
+#: plinth/modules/backups/__init__.py:44
 msgid "Backups allows creating and managing backup archives."
 msgstr ""
 "Резервне копіювання дозволяє створювати та керувати резервними архівами."
 
-#: plinth/modules/backups/__init__.py:49
+#: plinth/modules/backups/__init__.py:52
 #, python-brace-format
 msgid "{box_name} storage"
 msgstr "{box_name} сховище"
 
-#: plinth/modules/backups/forms.py:38
+#: plinth/modules/backups/forms.py:47
 #, python-brace-format
 msgid "{app} (No data to backup)"
 msgstr "{app} (Відсутні дані для резервування)"
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Included apps"
 msgstr "Вбудовані програми"
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Apps to include in the backup"
 msgstr "Застосунки для включення в резервну копію"
 
-#: plinth/modules/backups/forms.py:72
+#: plinth/modules/backups/forms.py:83
 msgid "Select the apps you want to restore"
 msgstr "Виберіть застосунки які хочете відновити"
 
-#: plinth/modules/backups/forms.py:85
+#: plinth/modules/backups/forms.py:96
 #, fuzzy
 msgid "Upload File"
 msgstr "Завантажити файл"
 
-#: plinth/modules/backups/forms.py:88
+#: plinth/modules/backups/forms.py:98
 msgid "Backup files have to be in .tar.gz format"
 msgstr "Файли резервної копії повинні бути у .tar.gz форматі"
 
-#: plinth/modules/backups/forms.py:89
+#: plinth/modules/backups/forms.py:99
 msgid "Select the backup file you want to upload"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:94
+#: plinth/modules/backups/forms.py:105
+#, fuzzy
+#| msgid "Repository not found"
+msgid "Repository path format incorrect."
+msgstr "Сховище не знайдено"
+
+#: plinth/modules/backups/forms.py:112
+#, python-brace-format
+msgid "Invalid username: {username}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:122
+#, python-brace-format
+msgid "Invalid hostname: {hostname}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:126
+#, python-brace-format
+msgid "Invalid directory path: {dir_path}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:132
 msgid "SSH Repository Path"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:95
+#: plinth/modules/backups/forms.py:133
 msgid ""
 "Path of a new or existing repository. Example: <i>user@host:~/path/to/repo/</"
 "i>"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:98
+#: plinth/modules/backups/forms.py:137
 msgid "SSH server password"
 msgstr "пароль SSH серверу"
 
-#: plinth/modules/backups/forms.py:99
+#: plinth/modules/backups/forms.py:138
 msgid ""
 "Password of the SSH Server.<br />SSH key-based authentication is not yet "
 "possible."
@@ -193,66 +214,75 @@ msgstr ""
 "Пароль для SSH серверу.<br /> Аутентифікація на основі SSH ключа поки не "
 "підтримується."
 
-#: plinth/modules/backups/forms.py:104
+#: plinth/modules/backups/forms.py:142
 msgid "Encryption"
 msgstr "Шифрування"
 
-#: plinth/modules/backups/forms.py:106
+#: plinth/modules/backups/forms.py:143
 msgid ""
 "\"Key in Repository\" means that a password-protected key is stored with the "
 "backup."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:111 plinth/modules/networks/forms.py:304
+#: plinth/modules/backups/forms.py:147 plinth/modules/networks/forms.py:304
 msgid "Passphrase"
 msgstr "Парольна фраза"
 
-#: plinth/modules/backups/forms.py:112
+#: plinth/modules/backups/forms.py:148
 msgid "Passphrase; Only needed when using encryption."
 msgstr "Парольна фраза; Потрібна лише при використанні шифрування."
 
-#: plinth/modules/backups/forms.py:117
+#: plinth/modules/backups/forms.py:151
 msgid "Confirm Passphrase"
 msgstr "Підтвердити парольну фразу"
 
-#: plinth/modules/backups/forms.py:118
+#: plinth/modules/backups/forms.py:151
 msgid "Repeat the passphrase."
 msgstr "Повторити парольну фразу."
 
-#: plinth/modules/backups/forms.py:139
+#: plinth/modules/backups/forms.py:162
 msgid "The entered encryption passphrases do not match"
 msgstr "Вказані парольні фрази шифрування не збігаються"
 
-#: plinth/modules/backups/forms.py:151
-#, python-format
-msgid "Accessing the remote repository failed. Details: %(err)s"
+#: plinth/modules/backups/forms.py:166
+#, fuzzy
+#| msgid "Passphrase; Only needed when using encryption."
+msgid "Passphrase is needed for encryption."
+msgstr "Парольна фраза; Потрібна лише при використанні шифрування."
+
+#: plinth/modules/backups/forms.py:183
+msgid "Remote backup repository already exists."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:45
+#: plinth/modules/backups/forms.py:189
+msgid "Select verified SSH public key"
+msgstr ""
+
+#: plinth/modules/backups/repository.py:46
 msgid ""
 "Connection refused - make sure you provided correct credentials and the "
 "server is running."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:51
+#: plinth/modules/backups/repository.py:53
 msgid "Connection refused"
 msgstr "З’єднання відхилено"
 
-#: plinth/modules/backups/repository.py:58
+#: plinth/modules/backups/repository.py:62
 msgid "Repository not found"
 msgstr "Сховище не знайдено"
 
-#: plinth/modules/backups/repository.py:65
+#: plinth/modules/backups/repository.py:70
 #, fuzzy
 msgid "Incorrect encryption passphrase"
 msgstr "Неправильне гасло шифрування"
 
-#: plinth/modules/backups/repository.py:70
+#: plinth/modules/backups/repository.py:76
 msgid "SSH access denied"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups.html:47
-msgid "Existing backups"
+msgid "Existing backup locations"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups.html:57
@@ -307,6 +337,7 @@ msgstr "Створити сховище"
 #: plinth/modules/backups/templates/backups_repository_add.html:45
 #: plinth/modules/backups/templates/backups_repository_remove.html:49
 #: plinth/modules/backups/templates/backups_restore.html:52
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:61
 #: plinth/modules/ikiwiki/templates/ikiwiki_delete.html:47
 #: plinth/modules/monkeysphere/templates/monkeysphere.html:67
 #: plinth/modules/networks/templates/connections_delete.html:41
@@ -329,7 +360,7 @@ msgid ""
 msgstr ""
 
 #: plinth/modules/backups/templates/backups_repository_remove.html:46
-#: plinth/modules/backups/views.py:286
+#: plinth/modules/backups/views.py:461
 msgid "Remove Repository"
 msgstr "Видалити сховище"
 
@@ -338,7 +369,7 @@ msgid "Restore data from"
 msgstr "Відновити дані з"
 
 #: plinth/modules/backups/templates/backups_restore.html:43
-#: plinth/modules/backups/views.py:186
+#: plinth/modules/backups/views.py:192
 msgid "Restore"
 msgstr "Відновити"
 
@@ -376,55 +407,108 @@ msgstr ""
 msgid "Upload file"
 msgstr ""
 
-#: plinth/modules/backups/views.py:53
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:40
+msgid "How to verify?"
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:45
+msgid ""
+"Run the following command on the SSH host machine. The output should match "
+"one of the provided options. You can also use dsa, ecdsa, ed25519 etc. "
+"instead of rsa, by choosing the corresponding file."
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:59
+msgid "Verify Host"
+msgstr ""
+
+#: plinth/modules/backups/views.py:57
 msgid "Upload"
 msgstr ""
 
-#: plinth/modules/backups/views.py:56 plinth/modules/ikiwiki/views.py:41
+#: plinth/modules/backups/views.py:60 plinth/modules/ikiwiki/views.py:41
 msgid "Create"
 msgstr "Створити"
 
-#: plinth/modules/backups/views.py:84
+#: plinth/modules/backups/views.py:88
 msgid "Archive created."
 msgstr "Архів створено."
 
-#: plinth/modules/backups/views.py:111
+#: plinth/modules/backups/views.py:117
 msgid "Delete Archive"
 msgstr "Видалити архів"
 
-#: plinth/modules/backups/views.py:123
+#: plinth/modules/backups/views.py:129
 msgid "Archive deleted."
 msgstr "Архів видалено."
 
-#: plinth/modules/backups/views.py:174
+#: plinth/modules/backups/views.py:180
 msgid "Restored files from backup."
 msgstr ""
 
-#: plinth/modules/backups/views.py:198
+#: plinth/modules/backups/views.py:208
 msgid "No backup file found."
 msgstr ""
 
-#: plinth/modules/backups/views.py:206
+#: plinth/modules/backups/views.py:216
 msgid "Restore from uploaded file"
 msgstr ""
 
-#: plinth/modules/backups/views.py:260
-msgid "Added new repository."
-msgstr "Додано нове сховище."
-
-#: plinth/modules/backups/views.py:265
+#: plinth/modules/backups/views.py:272
 msgid "Create remote backup repository"
 msgstr ""
 
-#: plinth/modules/backups/views.py:296
+#: plinth/modules/backups/views.py:292
+#, fuzzy
+#| msgid "Added new repository."
+msgid "Added new remote SSH repository."
+msgstr "Додано нове сховище."
+
+#: plinth/modules/backups/views.py:315
+msgid "Verify SSH hostkey"
+msgstr ""
+
+#: plinth/modules/backups/views.py:349
+msgid "SSH host already verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:358
+msgid "SSH host verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:382
+msgid "SSH host public key could not be verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:384
+msgid "Authentication to remote server failed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:386
+#, fuzzy
+#| msgid "Error installing application: {error}"
+msgid "Error establishing connection to server: {}"
+msgstr "Помилка при встановлені застосунку: {error}"
+
+#: plinth/modules/backups/views.py:389
+msgid "Repository path is neither empty nor is an existing backups repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:396
+#, fuzzy
+#| msgid "Repository not found"
+msgid "Repository removed."
+msgstr "Сховище не знайдено"
+
+#: plinth/modules/backups/views.py:471
 msgid "Repository removed. The remote backup itself was not deleted."
 msgstr ""
 
-#: plinth/modules/backups/views.py:304
+#: plinth/modules/backups/views.py:481
 msgid "Unmounting failed!"
 msgstr ""
 
-#: plinth/modules/backups/views.py:313 plinth/modules/backups/views.py:317
+#: plinth/modules/backups/views.py:496 plinth/modules/backups/views.py:500
 msgid "Mounting failed"
 msgstr ""
 
@@ -2062,7 +2146,13 @@ msgid ""
 "the initial setup is currently not supported."
 msgstr ""
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:40
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:36
+msgid ""
+"New users can be registered from any client if public registration is "
+"enabled."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:45
 #, python-format
 msgid ""
 "\n"
@@ -5092,7 +5182,7 @@ msgstr ""
 msgid "Log in"
 msgstr ""
 
-#: plinth/templates/clients.html:28
+#: plinth/templates/clients.html:29
 msgid "Client Apps"
 msgstr ""
 
diff --git a/plinth/locale/zh_Hans/LC_MESSAGES/django.po b/plinth/locale/zh_Hans/LC_MESSAGES/django.po
index b967367e3..60b7f5f66 100644
--- a/plinth/locale/zh_Hans/LC_MESSAGES/django.po
+++ b/plinth/locale/zh_Hans/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Plinth\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2019-06-24 19:48-0400\n"
+"POT-Creation-Date: 2019-07-08 17:31-0400\n"
 "PO-Revision-Date: 2019-06-28 18:01+0000\n"
 "Last-Translator: ZeroAurora <zeroaurora@qq.com>\n"
 "Language-Team: Chinese (Simplified) <https://hosted.weblate.org/projects/"
@@ -123,135 +123,165 @@ msgstr ""
 "在内部网络上运行。可以禁用以提高安全性，尤其是当连接到一个充满敌意的本地网"
 "络。"
 
-#: plinth/modules/backups/__init__.py:38 plinth/modules/backups/views.py:50
+#: plinth/modules/backups/__init__.py:41 plinth/modules/backups/views.py:54
 msgid "Backups"
 msgstr "备份"
 
-#: plinth/modules/backups/__init__.py:41
+#: plinth/modules/backups/__init__.py:44
 msgid "Backups allows creating and managing backup archives."
 msgstr "备份允许创建和管理备份存档。"
 
-#: plinth/modules/backups/__init__.py:49
+#: plinth/modules/backups/__init__.py:52
 #, python-brace-format
 msgid "{box_name} storage"
 msgstr "{box_name} 存储"
 
-#: plinth/modules/backups/forms.py:38
+#: plinth/modules/backups/forms.py:47
 #, python-brace-format
 msgid "{app} (No data to backup)"
 msgstr "{app} （没有要备份的数据）"
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Included apps"
 msgstr "包括的应用"
 
-#: plinth/modules/backups/forms.py:58
+#: plinth/modules/backups/forms.py:69
 msgid "Apps to include in the backup"
 msgstr "包括于备份中的应用"
 
-#: plinth/modules/backups/forms.py:72
+#: plinth/modules/backups/forms.py:83
 msgid "Select the apps you want to restore"
 msgstr "选择您想恢复的应用"
 
-#: plinth/modules/backups/forms.py:85
+#: plinth/modules/backups/forms.py:96
 msgid "Upload File"
 msgstr "上传文件"
 
-#: plinth/modules/backups/forms.py:88
+#: plinth/modules/backups/forms.py:98
 msgid "Backup files have to be in .tar.gz format"
 msgstr "备份文件必须为 .tar.gz 格式"
 
-#: plinth/modules/backups/forms.py:89
+#: plinth/modules/backups/forms.py:99
 msgid "Select the backup file you want to upload"
 msgstr "选择您想上传的备份文件"
 
-#: plinth/modules/backups/forms.py:94
+#: plinth/modules/backups/forms.py:105
+#, fuzzy
+#| msgid "packages not found"
+msgid "Repository path format incorrect."
+msgstr "找不到软件包"
+
+#: plinth/modules/backups/forms.py:112
+#, fuzzy, python-brace-format
+#| msgid "Invalid server name"
+msgid "Invalid username: {username}"
+msgstr "服务器名称无效"
+
+#: plinth/modules/backups/forms.py:122
+#, fuzzy, python-brace-format
+#| msgid "Invalid hostname"
+msgid "Invalid hostname: {hostname}"
+msgstr "无效的主机名"
+
+#: plinth/modules/backups/forms.py:126
+#, python-brace-format
+msgid "Invalid directory path: {dir_path}"
+msgstr ""
+
+#: plinth/modules/backups/forms.py:132
 msgid "SSH Repository Path"
 msgstr "SSH 存储库路径"
 
-#: plinth/modules/backups/forms.py:95
+#: plinth/modules/backups/forms.py:133
 msgid ""
 "Path of a new or existing repository. Example: <i>user@host:~/path/to/repo/</"
 "i>"
 msgstr "新的或已有存储库的路径。例如：<i>user@host:~/path/to/repo/</i>"
 
-#: plinth/modules/backups/forms.py:98
+#: plinth/modules/backups/forms.py:137
 msgid "SSH server password"
 msgstr "SSH 服务器密码"
 
-#: plinth/modules/backups/forms.py:99
+#: plinth/modules/backups/forms.py:138
 msgid ""
 "Password of the SSH Server.<br />SSH key-based authentication is not yet "
 "possible."
 msgstr "SSH 服务器的密码。<br />基于密钥的 SSH 验证暂不支持。"
 
-#: plinth/modules/backups/forms.py:104
+#: plinth/modules/backups/forms.py:142
 msgid "Encryption"
 msgstr "加密"
 
-#: plinth/modules/backups/forms.py:106
+#: plinth/modules/backups/forms.py:143
 msgid ""
 "\"Key in Repository\" means that a password-protected key is stored with the "
 "backup."
 msgstr "\"存储库中的密钥\"表示受密码保护的密钥与备份一起存储。"
 
-#: plinth/modules/backups/forms.py:111 plinth/modules/networks/forms.py:304
+#: plinth/modules/backups/forms.py:147 plinth/modules/networks/forms.py:304
 msgid "Passphrase"
 msgstr "密码"
 
-#: plinth/modules/backups/forms.py:112
+#: plinth/modules/backups/forms.py:148
 msgid "Passphrase; Only needed when using encryption."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:117
+#: plinth/modules/backups/forms.py:151
 #, fuzzy
 #| msgid "Passphrase"
 msgid "Confirm Passphrase"
 msgstr "密码"
 
-#: plinth/modules/backups/forms.py:118
+#: plinth/modules/backups/forms.py:151
 msgid "Repeat the passphrase."
 msgstr ""
 
-#: plinth/modules/backups/forms.py:139
+#: plinth/modules/backups/forms.py:162
 msgid "The entered encryption passphrases do not match"
 msgstr ""
 
-#: plinth/modules/backups/forms.py:151
-#, python-format
-msgid "Accessing the remote repository failed. Details: %(err)s"
+#: plinth/modules/backups/forms.py:166
+msgid "Passphrase is needed for encryption."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:45
+#: plinth/modules/backups/forms.py:183
+msgid "Remote backup repository already exists."
+msgstr ""
+
+#: plinth/modules/backups/forms.py:189
+msgid "Select verified SSH public key"
+msgstr ""
+
+#: plinth/modules/backups/repository.py:46
 msgid ""
 "Connection refused - make sure you provided correct credentials and the "
 "server is running."
 msgstr ""
 
-#: plinth/modules/backups/repository.py:51
+#: plinth/modules/backups/repository.py:53
 #, fuzzy
 #| msgid "Connection Type"
 msgid "Connection refused"
 msgstr "连接类型"
 
-#: plinth/modules/backups/repository.py:58
+#: plinth/modules/backups/repository.py:62
 #, fuzzy
 #| msgid "packages not found"
 msgid "Repository not found"
 msgstr "找不到软件包"
 
-#: plinth/modules/backups/repository.py:65
+#: plinth/modules/backups/repository.py:70
 msgid "Incorrect encryption passphrase"
 msgstr ""
 
-#: plinth/modules/backups/repository.py:70
+#: plinth/modules/backups/repository.py:76
 msgid "SSH access denied"
 msgstr ""
 
 #: plinth/modules/backups/templates/backups.html:47
 #, fuzzy
 #| msgid "Existing custom services"
-msgid "Existing backups"
+msgid "Existing backup locations"
 msgstr "现有的自定义服务"
 
 #: plinth/modules/backups/templates/backups.html:57
@@ -315,6 +345,7 @@ msgstr "创建用户"
 #: plinth/modules/backups/templates/backups_repository_add.html:45
 #: plinth/modules/backups/templates/backups_repository_remove.html:49
 #: plinth/modules/backups/templates/backups_restore.html:52
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:61
 #: plinth/modules/ikiwiki/templates/ikiwiki_delete.html:47
 #: plinth/modules/monkeysphere/templates/monkeysphere.html:67
 #: plinth/modules/networks/templates/connections_delete.html:41
@@ -337,7 +368,7 @@ msgid ""
 msgstr ""
 
 #: plinth/modules/backups/templates/backups_repository_remove.html:46
-#: plinth/modules/backups/views.py:286
+#: plinth/modules/backups/views.py:461
 msgid "Remove Repository"
 msgstr ""
 
@@ -348,7 +379,7 @@ msgid "Restore data from"
 msgstr "欢迎来到 %(box_name)s ！"
 
 #: plinth/modules/backups/templates/backups_restore.html:43
-#: plinth/modules/backups/views.py:186
+#: plinth/modules/backups/views.py:192
 #, fuzzy
 #| msgid "reStore"
 msgid "Restore"
@@ -390,61 +421,114 @@ msgstr ""
 msgid "Upload file"
 msgstr "下载我的配置文件"
 
-#: plinth/modules/backups/views.py:53
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:40
+msgid "How to verify?"
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:45
+msgid ""
+"Run the following command on the SSH host machine. The output should match "
+"one of the provided options. You can also use dsa, ecdsa, ed25519 etc. "
+"instead of rsa, by choosing the corresponding file."
+msgstr ""
+
+#: plinth/modules/backups/templates/verify_ssh_hostkey.html:59
+msgid "Verify Host"
+msgstr ""
+
+#: plinth/modules/backups/views.py:57
 #, fuzzy
 #| msgid "Download my profile"
 msgid "Upload"
 msgstr "下载我的配置文件"
 
-#: plinth/modules/backups/views.py:56 plinth/modules/ikiwiki/views.py:41
+#: plinth/modules/backups/views.py:60 plinth/modules/ikiwiki/views.py:41
 msgid "Create"
 msgstr "创建"
 
-#: plinth/modules/backups/views.py:84
+#: plinth/modules/backups/views.py:88
 msgid "Archive created."
 msgstr ""
 
-#: plinth/modules/backups/views.py:111
+#: plinth/modules/backups/views.py:117
 #, fuzzy
 #| msgid "Delete"
 msgid "Delete Archive"
 msgstr "删除"
 
-#: plinth/modules/backups/views.py:123
+#: plinth/modules/backups/views.py:129
 #, fuzzy
 #| msgid "{name} deleted."
 msgid "Archive deleted."
 msgstr "{name} 已删除。"
 
-#: plinth/modules/backups/views.py:174
+#: plinth/modules/backups/views.py:180
 msgid "Restored files from backup."
 msgstr ""
 
-#: plinth/modules/backups/views.py:198
+#: plinth/modules/backups/views.py:208
 msgid "No backup file found."
 msgstr ""
 
-#: plinth/modules/backups/views.py:206
+#: plinth/modules/backups/views.py:216
 msgid "Restore from uploaded file"
 msgstr ""
 
-#: plinth/modules/backups/views.py:260
-msgid "Added new repository."
-msgstr ""
-
-#: plinth/modules/backups/views.py:265
+#: plinth/modules/backups/views.py:272
 msgid "Create remote backup repository"
 msgstr ""
 
-#: plinth/modules/backups/views.py:296
+#: plinth/modules/backups/views.py:292
+#, fuzzy
+#| msgid "Create User"
+msgid "Added new remote SSH repository."
+msgstr "创建用户"
+
+#: plinth/modules/backups/views.py:315
+msgid "Verify SSH hostkey"
+msgstr ""
+
+#: plinth/modules/backups/views.py:349
+msgid "SSH host already verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:358
+msgid "SSH host verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:382
+msgid "SSH host public key could not be verified."
+msgstr ""
+
+#: plinth/modules/backups/views.py:384
+msgid "Authentication to remote server failed."
+msgstr ""
+
+#: plinth/modules/backups/views.py:386
+#, fuzzy
+#| msgid "Error installing application: {error}"
+msgid "Error establishing connection to server: {}"
+msgstr "安装应用程序出错：{error}"
+
+#: plinth/modules/backups/views.py:389
+msgid "Repository path is neither empty nor is an existing backups repository."
+msgstr ""
+
+#: plinth/modules/backups/views.py:396
+#, fuzzy
+#| msgid "packages not found"
+msgid "Repository removed."
+msgstr "找不到软件包"
+
+#: plinth/modules/backups/views.py:471
 msgid "Repository removed. The remote backup itself was not deleted."
 msgstr ""
 
-#: plinth/modules/backups/views.py:304
+#: plinth/modules/backups/views.py:481
 msgid "Unmounting failed!"
 msgstr ""
 
-#: plinth/modules/backups/views.py:313 plinth/modules/backups/views.py:317
+#: plinth/modules/backups/views.py:496 plinth/modules/backups/views.py:500
 msgid "Mounting failed"
 msgstr ""
 
@@ -2323,7 +2407,13 @@ msgstr ""
 "%(domainname)s</i>。你可以在系统的<a href=\\\"%(index_url)s\\\">配置</a>中设"
 "置你的域名。"
 
-#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:40
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:36
+msgid ""
+"New users can be registered from any client if public registration is "
+"enabled."
+msgstr ""
+
+#: plinth/modules/matrixsynapse/templates/matrix-synapse.html:45
 #, python-format
 msgid ""
 "\n"
@@ -5752,7 +5842,7 @@ msgstr "语言"
 msgid "Log in"
 msgstr "登录"
 
-#: plinth/templates/clients.html:28
+#: plinth/templates/clients.html:29
 #, fuzzy
 #| msgid "Quassel IRC Client"
 msgid "Client Apps"