Fixed a bug when the server we want to update is a "real" Server with only VE's in it (and nothing else in his DB)

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 the user-rights for this table in the installer

- Added a robots.txt file in the root directory of the ispconfig interface to prevent it from being spidered by search engine robots that follow the robots excusion standard.
- Fixed a error message in the installer.

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

Added a filesize check for existing_db.sql in updater to stop update process if the expoerted database dump is smaller then about 60 KB.

Replaced --all with --create-options in the mysqldump statement as --all is deprecated and may lead to an error message in the sql dump.

- Better default settings for the "Normal" spamfilter policy.