add "register" button next to "login" if django-registration available

pyweb/mumble/templates/mumble/list.html

@@ -21,7 +21,7 @@
                 layout:   "border",
                 title:    gettext("Mumble Servers"),
                 buttons: [
-                    {% if user.is_staff and ROSETTA_INSTALLED %}
+                    {% if user.is_staff and "rosetta" in INSTALLED_APPS %}
                     {
                         xtype: 'buttonIframeWindow',
                         text:  gettext('Edit Translation'),

pyweb/mumble/templates/mumble/mumble.html

@@ -35,14 +35,14 @@
                 height:   600,
                 layout:   "border",
                 tbar: [ {
-                    text: gettext("back"),
+                    text: gettext("Back to the server list"),
                     xtype: "button",
                     handler: function(){
                         location.href = "{% url mumble.views.mumbles %}";
                     }
                 } ],
                 buttons: [
-                    {% if user.is_staff and ROSETTA_INSTALLED %}
+                    {% if user.is_staff and "rosetta" in INSTALLED_APPS %}
                     {
                         xtype: 'buttonIframeWindow',
                         text:  gettext('Edit Translation'),
@@ -59,6 +59,13 @@
                     {% if user.is_authenticated %}
                         new Ext.ux.ButtonLogout()
                     {% else %}
+                        {% if 'registration' in INSTALLED_APPS %}
+                        {
+                            xtype: 'buttonIframeWindow',
+                            text:  gettext('Register'),
+                            url: '{% url registration.views.register %}',
+                        },
+                        {% endif %}
                         new Ext.ux.ButtonLogin()
                     {% endif %}
                 ],

pyweb/processors.py

@@ -17,7 +17,7 @@
 
 def installed_apps(request):
     from django.conf import settings
-    return { 'ROSETTA_INSTALLED': "rosetta" in settings.INSTALLED_APPS }
+    return { 'INSTALLED_APPS': settings.INSTALLED_APPS }
 
 def mumble_version(request):
     from mumble import version_str

pyweb/templates/index.html

@@ -31,7 +31,7 @@
           {% endif %}
           {% if user.is_staff %}
             <a href="{% url admin:index %}" target="_blank">{% trans "Administration" %}</a> |
-            {% if ROSETTA_INSTALLED %}
+            {% if "rosetta" in INSTALLED_APPS %}
               <a href="{% url rosetta.views.home %}" target="_blank">{% trans "Edit translations" %}</a> |
             {% endif %}
           {% endif %}