Fixed: FS#1269 - Field "Max. type of cron jobs (chrooted and full implies url)" in Client limits is misleading 

Added the configuration variable $conf['demo_mode'] in the config.inc.php file. It disables the newly introduced demo mode which limits certain actions in the interface part of ispconfig: the demo mode can be used to run the ispconfig interface part as online demo.

- 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.

Implemented: FS#1049 - Allow "Login as" also from the client list as it is allready possible from sysuser list.

Fixed: FS#1012 - Delete all records (domains, ftp users, etc.) of a client when the client gets deleted.