How can I change the title bar to show my domain instead of Roundcube Webmail (e.g. MyDomain :: Inbox, NOT RoundCube Webmail :: Inbox) :P
How about simply reading the config/main.inc.php file?????
Especially the part concerning:
$rcmail_config['product_name']
And also with the search button, you could have found the following topic in the "plugin" forum:
http://roundcubeforum.net/forum/index.php?topic=2012.0