Implemented:  FS#2388 - Optional confirm window on changing tabs

- Added translations to global search.

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

Added a new module called "domain". With this module you can manage all domains (web + mail). Per default this module is not active. To activate it, you have to change the System Interface Config -> domains -> use the domain module. You also have to activate the domain-module for the admin (and for every client if you want). Important: you can not use this module if you have reseller!

Added new "DATE" datatype which uses the native mysql date format instead of tstamps in tform library. The old tstamp datatype as been renamed to "DATETSTAMP".

Merged all language files.

fix for local characters not encoded properly in welcome-email. remove trailing empty lines from finnish language, again...

- Added onKeypress handler for the username field in the login form.