Bumps version.

index.html

     <script src="estos_log.js?v=2"></script><!-- simple stanza logger -->
     <script src="desktopsharing.js?v=3"></script><!-- desktop sharing -->
     <script src="data_channels.js?v=3"></script><!-- data channels -->
-    <script src="app.js?v=16"></script><!-- application logic -->
+    <script src="app.js?v=17"></script><!-- application logic -->
     <script src="commands.js?v=1"></script><!-- application logic -->
     <script src="chat.js?v=11"></script><!-- chat logic -->
     <script src="contact_list.js?v=4"></script><!-- contact list logic -->