Apply changes from r4577 to release branch

thomascube

2011-02-27 01a3689c209f5ff480c178da8bd32de4a61a4e5c

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<?php
 
// Help content iframe source
// $rcmail_config['help_source'] = 'http://trac.roundcube.net/wiki';
$rcmail_config['help_source'] = '';