alan and live-config/: migrated to alan2 (the live-config script *dosen't* work currently)
glade frontend: put the settings management (fullscreen, etc.) in another method.

Frontend.on_objects_ready() is being used since some time to properly set header and things like that.
The Service will now call on_objects_ready_internal() in order to get the settings properly parsed.
Added linstaller-session.