added image to project. Need to adjust size, offset, etc. Need also to investigate CMAKE resource adding

Finished with controller, therefore we merge

Merge branch 'controller_update' of https://gitlab.ethz.ch/D-FaLL/D-FaLL-System into controller_update

This has to be done

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

Merge branch 'controller_update' of https://gitlab.ethz.ch/D-FaLL/D-FaLL-System into controller_update

added student controller framework called CustomControllerService---hopefully now it actually pushes the file..

changed the function convertIntoBodyFrame(request, est, state, yaw_measured) such that it uses the measured yaw without considering the setpoint - eliminates the drifting problem but is probably still wrong regarding the controlling logic. Added an rqt-plot to the launch file.

supposedly fixed problem caused when multiple Cf-Objects are selected in Vicon. Plus some cosmetic changes

implemented Kalman filter as state estimator, but position is converging very slowly and causes oscillations in x, y and z direction

Fixed problem Moving markers. Still need to find out a way of moving the anti-zooming highlight circle

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