fix rss title

templates/default/room/index.rss.twig

@@ -2,7 +2,7 @@
 <rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:dc="http://purl.org/dc/elements/1.1/">
     <channel>
         <atom:link href="{{ url('room_namespace', { namespace : request.get('namespace') }) }}" rel="self" type="application/rss+xml"></atom:link>
-        <title>{{ name }} - {{ app.name }}</title>
+        <title>{{ request.get('namespace') | keva_namespace_value }} - {{ 'KevaChat' | trans }}</title>
         <link>{{ url('room_namespace', { namespace : request.get('namespace') }) }}</link>
         {% for post in feed %}
             <item>