Updated installation-Instruction for debian

Added more translations to monitor-module, mostly done now, couple annoyances left. merged changes with all languages.

Fixed some bugs and improved the RAID - monitor
Fixed the user count in the monitor
The monitor now monitors the rkhunter - log too
The monitor now deletes the old data AFTER writing the new one, so there are always data in the db

changed the menu (hopefully now better to understand)
fixed some small errors in update-state

Monitor Module now has system state

- Update italian language

It is now possible to add "navigation-text" without links (actions) to the left navigations-side of the template (needed by the monitor module to add the server-dropdown)