Move ejabberd install info to template file.

plinth/modules/xmpp/templates/xmpp.html

@@ -0,0 +1,36 @@
+{% extends "base.html" %}
+{% comment %}
+#
+# This file is part of Plinth.
+#
+# 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/>.
+#
+{% endcomment %}
+
+{% load bootstrap %}
+
+{% block main_block %}
+
+<p>XMPP Server Accounts and Configuration</p>
+
+{% if not is_installed %}
+
+<p>ejabberd is not installed, please install it. ejabberd comes pre-installed
+  with {{ cfg.box_name }}. On any Debian-based system (such as
+  {{ cfg.box_name }}) you may install it using the command
+  'aptitude install ejabberd'.</p>
+
+{% endif %}
+
+{% endblock %}

plinth/modules/xmpp/xmpp.py

@@ -71,23 +71,15 @@ def index(request):
         'xmpp',
         ['get-installed']).strip() == 'installed'
 
-    main = "<p>XMPP Server Accounts and Configuration</p>"
-    if not is_installed:
-        main += """
-<p>ejabberd is not installed, please install it. ejabberd comes pre-installed
-with FreedomBox. On any Debian-based system (such as FreedomBox) you may install
-it using the command 'aptitude install ejabberd'</p>
-"""
-
     if is_installed:
         sidebar_right = render_to_string('menu_block.html', {'menu': SIDE_MENU},
                                          RequestContext(request))
     else:
         sidebar_right = None
 
-    return TemplateResponse(request, 'base.html',
+    return TemplateResponse(request, 'xmpp.html',
                             {'title': _('XMPP Server'),
-                             'main': main,
+                             'is_installed': is_installed,
                              'sidebar_right': sidebar_right})