Prevent the possibility of entering '@' in the fields of 'room' and 'server' in the manage bookmarks dialog.
Set the selection at startup manage bookmarks dialog.
Fix var name in dialogs.py

Also use sed to remove now unneeded Vim lines, 2to3 -f ws_comma to fix
some whitespace, and fix some other madness manually.

Add browse rooms button in join groupchat dialog. Fixes #3546

also use 2to3 -f ws_comma to fix some whitespace

holy diff batman!

[Spike411] Facebook iconset for Gajim. A great thanks to Jakub Szypulka for is iconset: http://cubestuff.wordpress.com/2008/05/21/facebook-goes-tango/