system: Use new setup mechanism

plinth/modules/system/__init__.py

@@ -19,8 +19,29 @@
 Plinth module for system section page
 """
 
-from . import system
-from .system import init
+from django.utils.translation import ugettext_lazy as _
+
+from plinth import cfg
+from plinth.utils import format_lazy
 
 
-__all__ = ['system', 'init']
+version = 1
+
+is_essential = 1
+
+title = _('System Configuration')
+
+description = [
+    format_lazy(
+        _('Here you can administrate the underlying system of your '
+          '{box_name}.'), box_name=_(cfg.box_name)),
+
+    format_lazy(
+        _('The options affect the {box_name} at its most general level, '
+          'so be careful!'), box_name=_(cfg.box_name))
+]
+
+
+def init():
+    """Initialize the system module"""
+    cfg.main_menu.add_urlname(title, 'glyphicon-cog', 'system:index', 100)

plinth/modules/system/templates/system.html

@@ -1,4 +1,4 @@
-{% extends 'base.html' %}
+{% extends 'app.html' %}
 {% comment %}
 #
 # This file is part of Plinth.
@@ -17,25 +17,3 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 {% endcomment %}
-
-{% load i18n %}
-
-{% block content %}
-
-  <h2>{% trans "System Configuration" %}</h2>
-
-  <p>
-    {% blocktrans trimmed %}
-      Here you can administrate the underlying system of your
-      {{ box_name }}.
-    {% endblocktrans %}
-  </p>
-
-  <p>
-    {% blocktrans trimmed %}
-      The options affect the {{ box_name }} at its most general level,
-      so be careful!
-    {% endblocktrans %}
-  </p>
-
-{% endblock %}

plinth/modules/system/urls.py

@@ -21,7 +21,7 @@ URLs for the System module
 
 from django.conf.urls import url
 
-from . import system as views
+from . import views
 
 
 urlpatterns = [

plinth/modules/system/views.py

@@ -16,18 +16,12 @@
 #
 
 from django.template.response import TemplateResponse
-from django.utils.translation import ugettext_lazy as _
 
-from plinth import cfg
-
-
-def init():
-    """Initialize the system module"""
-    cfg.main_menu.add_urlname(_('System'), 'glyphicon-cog', 'system:index',
-                              100)
+from plinth.modules import system
 
 
 def index(request):
     """Serve the index page"""
     return TemplateResponse(request, 'system.html',
-                            {'title': _('System Configuration')})
+                            {'title': system.title,
+                             'description': system.description})