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

- 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.

Fixes Encoding to UTF-8 and Add Some New Strings

Merged all language files.

Added a global default for the .htaccess allow_override setting.

Added Support for Sieve mail filtering language on dovecot servers.

Added a Checkbox to the language import form to ignore the version of the language file.