backporting from ispc-larry: country-flags in lists, added groups to admin/users list, added icons for user_typ

- Improved support for multiple PHP versions. Additional PHP versions have now their own form and database table.

Sort and limit in ispconfig all templates... additional info howtoforge - http://www.howtoforge.com/forums/showthread.php?p=274790

fixed #681 - removed all onblur, checked onchange for function and removed it in filter panels. Added jquery keypress (event 13 -> enter) and tested it in different browsers