- Added "actions" framework in server to replace the functions provided by the core modules
- Moved system update function from remoteactins core module to software update plugin.

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

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

- changed GRANTs for slave servers on multiserver setups
- added option for clients to change path of ftp users (inside webroot)
- extended software packaging system (return status of install)
- added 2 plugins for automatically create symlinks webmail and phpmyadmin on each website (not enabled by default)

- Improved installer and updater for multiserver mode. Modules and plugins were only configured if the selected service is available on the server.