names: Use new setup mechanism

plinth/modules/names/__init__.py

@@ -31,8 +31,14 @@ SERVICES = (
     ('ssh', _('SSH'), 22),
 )
 
+version = 1
+
+is_essential = True
+
 depends = ['system']
 
+title = _('Name Services')
+
 domain_types = {}
 domains = {}
 
@@ -42,8 +48,7 @@ logger = logging.getLogger(__name__)
 def init():
     """Initialize the names module."""
     menu = cfg.main_menu.get('system:index')
-    menu.add_urlname(_('Name Services'), 'glyphicon-tag',
-                     'names:index', 19)
+    menu.add_urlname(title, 'glyphicon-tag', 'names:index', 19)
 
     domain_added.connect(on_domain_added)
     domain_removed.connect(on_domain_removed)
@@ -54,6 +59,7 @@ def on_domain_added(sender, domain_type, name='', description='',
     """Add domain to global list."""
     if not domain_type:
         return
+
     domain_types[domain_type] = description
 
     if not name:

plinth/modules/names/templates/names.html

@@ -1,4 +1,4 @@
-{% extends "base.html" %}
+{% extends "app.html" %}
 {% comment %}
 #
 # This file is part of Plinth.
@@ -21,9 +21,7 @@
 {% load bootstrap %}
 {% load i18n %}
 
-{% block content %}
-
-<h2>{{ title }}</h2>
+{% block configuration %}
 
 <div class="row">
   <div class="col-sm-5">

plinth/modules/names/views.py

@@ -24,6 +24,7 @@ from django.utils.translation import ugettext as _
 
 from . import SERVICES, get_domain_types, get_description
 from . import get_domain, get_services_status
+from plinth.modules import names
 
 
 def index(request):
@@ -31,7 +32,7 @@ def index(request):
     status = get_status()
 
     return TemplateResponse(request, 'names.html',
-                            {'title': _('Name Services'),
+                            {'title': names.title,
                              'status': status})