Simple PC/Robot Message framework with test for Bluetooth

Add remote control program for the NXT able to receive simple message over bluetooth (FWD, BWD, RIGHT, LEFT) and move accordingly.
Add simple control program on PC side with basic GUI to send those messages over BT.
No protobuff handling yet. 

This is in Java ;).

To test it, instructions can be found on the drive in "HowTo play with leJOS in Linux".