http://bugtracker.ispconfig.org/index.php?do=details&task_id=1601&project=3

Thanks Ben Lake

- Added UFW firewall support.

changed translation of sites from "domains" to "Internet-Auftritt", because we also have a MODULE called "domains"

Added global functions library which conatins a mail functin that supports attachments and a array_merge function that merges arrays that conatain numeric keys and strings correctly.

*) Forgot to add the entries for mailman in the main.cf of postfix

Handling For: Warning: Invalid argument supplied for foreach() on lines 54, 141 and 178. - Empty Arg Array.

Updated english languages files
Updated czech languages files

- replace double-quotes with single-quotes whenever appropriate
- fix indentation