diagnostics: Use new setup mechanism

plinth/modules/diagnostics/__init__.py

@@ -19,15 +19,32 @@
 Plinth module for system diagnostics
 """
 
-from . import diagnostics
-from .diagnostics import init
-from plinth import action_utils
+from django.utils.translation import ugettext_lazy as _
 
-__all__ = ['diagnostics', 'init']
+from plinth import action_utils
+from plinth import cfg
+
+version = 1
+
+is_essential = True
+
+title = _('Diagnostics')
+
+description = [
+    _('The system diagnostic test will run a number of checks on your '
+      'system to confirm that applications and services are working as '
+      'expected.')
+]
 
 depends = ['system']
 
 
+def init():
+    """Initialize the module"""
+    menu = cfg.main_menu.get('system:index')
+    menu.add_urlname(title, 'glyphicon-screenshot', 'diagnostics:index', 30)
+
+
 def diagnose():
     """Run diagnostics and return the results."""
     results = []

plinth/modules/diagnostics/diagnostics.py

@@ -24,12 +24,11 @@ from django.http import Http404
 from django.template.response import TemplateResponse
 from django.views.decorators.http import require_POST
 from django.utils.translation import ugettext_lazy as _
-import importlib
 import logging
 import threading
 
-from plinth import cfg
 from plinth import module_loader
+from plinth.modules import diagnostics
 
 
 logger = logging.Logger(__name__)
@@ -39,20 +38,14 @@ current_results = {}
 _running_task = None
 
 
-def init():
-    """Initialize the module"""
-    menu = cfg.main_menu.get('system:index')
-    menu.add_urlname(_('Diagnostics'), 'glyphicon-screenshot',
-                     'diagnostics:index', 30)
-
-
 def index(request):
     """Serve the index page"""
     if request.method == 'POST' and not _running_task:
         _start_task()
 
     return TemplateResponse(request, 'diagnostics.html',
-                            {'title': _('System Diagnostics'),
+                            {'title': diagnostics.title,
+                             'description': diagnostics.description,
                              'is_running': _running_task is not None,
                              'results': current_results})
 

plinth/modules/diagnostics/templates/diagnostics.html

@@ -1,4 +1,4 @@
-{% extends 'base.html' %}
+{% extends 'app.html' %}
 {% comment %}
 #
 # This file is part of Plinth.
@@ -29,17 +29,7 @@
 {% endblock %}
 
 
-{% block content %}
-
-  <h2>{{ title }}</h2>
-
-  <p>
-    {% blocktrans trimmed %}
-      The system diagnostic test will run a number of checks on your
-      system to confirm that applications and services are working as
-      expected.
-    {% endblocktrans %}
-  </p>
+{% block configuration %}
 
   {% if not is_running %}
     <form class="form form-diagnostics-button" method="post"