Updates js versions.

index.html

     <script src="//ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js"></script>
     <script src="libs/strophejingle.bundle.js?v=1"></script><!-- strophe.jingle bundle -->
     <script src="libs/colibri.js?v=1"></script><!-- colibri focus implementation -->
-    <script src="muc.js?v=1"></script><!-- simple MUC library -->
+    <script src="muc.js?v=2"></script><!-- simple MUC library -->
     <script src="estos_log.js?v=1"></script><!-- simple stanza logger -->
-    <script src="app.js?v=1"></script><!-- application logic -->
+    <script src="app.js?v=2"></script><!-- application logic -->
     <link href="//netdna.bootstrapcdn.com/font-awesome/4.0.3/css/font-awesome.css" rel="stylesheet">
     <link rel="stylesheet" type="text/css" media="screen" href="css/main.css?v=1"/>
     <link rel="stylesheet" href="css/jquery-impromptu.css?v=1">