rosbag included. not working and creating error at startup. rest should however still run. safetycheck added again ... switches off and terminates ros when area boundaries are left

changes to CMakeList, Crazyflie.launch and CustomControllerService -- all concerning the CustomControllerService

Now we compile everything correctly from catkin and from QtCreator. Had to go back to one CMakeLists.txt file, otherwise would not work

CMakeLists.txt for GUI separated from general file. Now we have two CMakeLists.txt, one for general project, and one for GUI

Added comments to CMakeLists.txt. Thinking now on better solution, maybe having my own CMakeLists.txt inside GUI folder and calling it from this CMakeLists.txt