Added LED support and better message management

- Replaced all exit codes in the automount with a more general exitmanager
- Created a messagemanager for a more abstract control of LED lights
- Added LED control to the automount-script(Pending, Working & Done)
- Added LED support in the ping-script to detect wether connection is established with ping server(Green LED)
- Added timeout-script for more failsafe network-detection
- Added lights.sh for LED control(ON/OFF/BLINK/WORK/STOPBLINK)