Fixed bug in string interface/web/admin/lib/lang/*_serverip_.lng should be ip_error_wrong or ip_error_unique.

FS#880 - field created_at in table clients 

Improved regex for module and filename check in content.php and changed relative path to absolute path in include statement. Many thanks to Mirko for finding this.

Added SOAP support for mail module. Many thanks to Arkadiusz Roch & Artur Edelman from Tri-Plex technology

Fixed: FS#846 - Language Editor: wrong filename shown while editing language-file outher global module 

Removed version number when no user is logged in. Please do not undo this. If you do not understand why something has been changed by me, please ask.

For some reason till has made the version number not to load when no user is logged in.
Due to ajax login the version number remains not loaded even after login until the whole page is reloaded.
I didn't find any comment why is this done, so I revert it.

Translation folow Fixed: FS#822 -for Main tabs at top not applying translations. Now login page and main tabs translations works. regards till.