Implemented: FS#1252 - Add permission system based on user / password to app installer 

- I had to reorder the variables in language_list.htm for the link URL's
- Moved the lang_file var to the beginning of the URL to make it work.
- For some strange reason if you have &lang_file in the url it changes it to <_file.

- Fixed a formatting problem with suphp.conf and newer suphp versions.

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!

- Set a fixed column width for the buttons in the client and reseller list.

Added European Portuguese translation. Many thanks to Miguel Almeida to provide this language file set.

Impoved the software update function to enable the installation of apps like phpmyadmin into the apps vhost.

Fixes Encoding to UTF-8 and Add Some New Strings