Fix vulnerability in handling _session argument of utils/save-prefs (#1489382)

Aleksander Machniak

2013-10-17 037af6890fe6fdb84a08d3c86083e847c90ec0ad

 plugins/help/config.inc.php.dist

New file
@@ -0,0 +1,5 @@
<?php

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