Merged revisions 3049-3051,3053-3054,3058,3070,3074-3077,3082,3086-3088,3091-3092,3094-3095 from stable branch.

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

Fixed bugs in installer.
A backup file of the database is stored in /root during update.

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