*: Remove use of Turbolinks library

See #1841 for discussion on why Turbolinks needs to be removed.

Closes: #1841.
Closes: #1804.

Tests performed:

- There are no more references to 'turbolinks' in source code other than .po(t)
  files and the manual.

- When loading a page, turbolinks.js is no longer loaded.

- The following links don't have data-turbolinks attribute and work well when
  clicked.a
  - Gitweb repository links
  - Download manual links (en, es)
  - Ikiwiki wiki links
  - Sharing app web share links
  - TT-RSS mobile app link
  - 'Launch web client' button
  - 'Launch' button in web section of clients table
  - Active and regular front page shortcut

- Roundcube does not have a link to /roundcube in description.

- turblinks not present in /static/jslicense.html . LibreJs accepts all scripts.

Reported-by: Veiko Aasa <veiko17@disroot.org>
Signed-off-by: Sunil Mohan Adapa <sunil@medhas.org>
Tested-by: Sunil Mohan Adapa <sunil@medhas.org>
Reviewed-by: Veiko Aasa <veiko17@disroot.org>

debian/control

@@ -85,7 +85,6 @@ Depends:
  lsof,
  netcat-openbsd,
  network-manager,
- node-turbolinks,
  ppp,
  pppoe,
  python3-apt,

plinth/modules/gitweb/templates/gitweb_configure.html

@@ -70,7 +70,6 @@
                 <span class="repo-label">{{ repo.name }}<span>
               {% else %}
                 <a class="repo-label" href="/gitweb/{{ repo.name }}.git"
-                  data-turbolinks="false"
                   title="{% blocktrans %}Go to repository {{ repo.name }}{% endblocktrans %}">
                   {{ repo.name }}
                 </a>

plinth/modules/help/static/help.js

@@ -1,28 +0,0 @@
-// SPDX-License-Identifier: AGPL-3.0-or-later
-/**
- * @licstart The following is the entire license notice for the JavaScript
- * code in this page.
- *
- * This file is part of FreedomBox.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * @licend The above is the entire license notice for the JavaScript code
- * in this page.
- */
-
-(function($) {
-    let downloadManualButton = $('a[href="/plinth/help/manual-download/"]');
-    downloadManualButton.attr("data-turbolinks", "false");
-})(jQuery);

plinth/modules/help/templates/help_manual.html

@@ -26,7 +26,3 @@
   </a>
   {{ content|safe }}
 {% endblock %}
-
-{% block page_js %}
-  <script type="text/javascript" src="{% static 'help/help.js' %}"></script>
-{% endblock %}

plinth/modules/ikiwiki/templates/ikiwiki_configure.html

@@ -36,7 +36,6 @@
               </a>
 
               <a class="wiki-label" href="/ikiwiki/{{ site.0 }}"
-                 data-turbolinks="false"
                  title="{% blocktrans with site=site.1 %}Go to site {{ site }}{% endblocktrans %}">
                 {{ site.1 }}
               </a>

plinth/modules/roundcube/__init__.py

@@ -23,8 +23,7 @@ _description = [
       'full functionality you expect from an email client, including '
       'MIME support, address book, folder manipulation, message '
       'searching and spell checking.'),
-    _('You can access Roundcube from <a href="/roundcube" data-turbolinks='
-      '"false">/roundcube</a>. Provide the username and password of the email '
+    _('You can use it by providing the username and password of the email '
       'account you wish to access followed by the domain name of the '
       'IMAP server for your email provider, like <code>imap.example.com'
       '</code>.  For IMAP over SSL (recommended), fill the server field '

plinth/modules/shaarli/__init__.py

@@ -18,10 +18,8 @@ managed_packages = ['shaarli']
 
 _description = [
     _('Shaarli allows you to save and share bookmarks.'),
-    _('When enabled, Shaarli will be available from <a href="/shaarli" '
-      'data-turbolinks="false">/shaarli</a> path on the web server. Note that '
-      'Shaarli only supports a single user account, which you will need to '
-      'setup on the initial visit.'),
+    _('Note that Shaarli only supports a single user account, which you will '
+      'need to setup on the initial visit.'),
 ]
 
 app = None

plinth/modules/sharing/templates/sharing.html

@@ -48,8 +48,7 @@
             <td class="share-name">{{ share.name }}</td>
             <td class="share-path">{{ share.path }}</td>
             <td class="share-url">
-              <a href="{{ share.url }}" title="{{ share.url}}"
-                 data-turbolinks="false">
+              <a href="{{ share.url }}" title="{{ share.url}}">
                 {{ share.url }}
               </a>
             </td>

plinth/modules/ttrss/__init__.py

@@ -35,8 +35,7 @@ _description = [
         box_name=_(cfg.box_name), users_url=reverse_lazy('users:index')),
     format_lazy(
         _('When using a mobile or desktop application for Tiny Tiny RSS, use '
-          'the URL <a href="/tt-rss-app/" data-turbolinks="false">'
-          '/tt-rss-app</a> for connecting.'))
+          'the URL <a href="/tt-rss-app/">/tt-rss-app</a> for connecting.'))
 ]
 
 app = None

plinth/templates/base.html

@@ -24,7 +24,6 @@
   maximum-scale = 1.0 retains dimensions instead of zooming in if page width < device width
   -->
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <meta name="turbolinks-cache-control" content="no-preview">
 
   <!-- R2D2, you know better than to trust a strange computer! -->
   <meta name="robots" content="noindex, nofollow, noarchive" />
@@ -56,8 +55,6 @@
   <link rel="stylesheet" href="{% static '/javascript/bootstrap/css/bootstrap.min.css' %}"/>
   <link rel="stylesheet" href="{% static '/javascript/fork-awesome/css/fork-awesome.css' %}"/>
   <link rel="stylesheet" href="{% static 'theme/css/main.css' %}"/>
-  <!-- Local link to system Turbolinks JS -->
-  <script type="text/javascript" src="{% static '/javascript/turbolinks/turbolinks.js' %}" defer></script>
   <!-- Local link to system Modernizr (includes HTML5 Shiv) -->
   <script type="text/javascript" src="{% static '/javascript/modernizr/modernizr.min.js' %}" defer></script>
   <!-- Local link to system jQuery -->

plinth/templates/clients-button.html

@@ -9,10 +9,10 @@
   {% with client_platforms=clients|clients_get_platforms %}
     {% if client_platforms.web|length == 1 %}
       <a target='_blank' rel="noopener noreferrer"
-         class="btn btn-primary" role="button" data-turbolinks="false"
+         class="btn btn-primary" role="button"
          {% if not enabled %} disabled="disabled"
          {% else %} href="{{ client_platforms.web.0.url }}"
-         {% endif %} data-turbolinks="false">
+         {% endif %}>
         {% trans "Launch web client" %}
         <span class="fa fa-external-link"></span>
       </a>

plinth/templates/clients.html

@@ -21,7 +21,7 @@
                 <td>{{ client.name }}</td>
                 <td>
                   <a target="_blank" rel="noopener noreferrer"
-                     class="btn btn-default" role="button" data-turbolinks="false"
+                     class="btn btn-default" role="button"
                      {% if not enabled %} disabled="disabled"
                      {% else %} href="{{ platform.url }}"
                      {% endif %}>

plinth/templates/index.html

@@ -65,9 +65,9 @@
               {% if user.is_authenticated or not shortcut.login_required %}
                 <div class="card thumbnail">
                   {% if selected_shortcut.component_id == shortcut.component_id %}
-                    <a href="{{ shortcut.url }}" class="nav-link active" data-turbolinks="false">
+                    <a href="{{ shortcut.url }}" class="nav-link active">
                   {% else %}
-                    <a href="{{ shortcut.url }}" class="nav-link" data-turbolinks="false">
+                    <a href="{{ shortcut.url }}" class="nav-link">
                   {% endif %}
                         <div class="card-title">
                           {{ shortcut.name }}

static/jslicense.html

@@ -37,15 +37,6 @@
           <td><a href="https://salsa.debian.org/js-team/modernizr.git">
             modernizr</a></td>
         </tr>
-        <tr>
-          <td><a href="/javascript/turbolinks/turbolinks.js">
-            turbolinks.js</a></td>
-          <td><a href="http://www.jclark.com/xml/copying.txt">Expat</a></td>
-          <td>
-            <a href="https://salsa.debian.org/js-team/node-turbolinks.git">
-              node-turbolinks</a>
-          </td>
-        </tr>
         <tr>
           <td><a href="/plinth/static/jsxc/jsxc-plinth.js">jsxc-plinth.js</a></td>
           <td>

static/themes/default/css/main.css

@@ -480,11 +480,6 @@ a.menu_link_active {
     background-image: url('../img/system-background.svg');
 }
 
-.turbolinks-progress-bar {
-    height: 3px;
-    background-color: white;
-}
-
 .names-table {
     table-layout: fixed;
     overflow-wrap: break-word;