Crazyradio logs batterz status and writes to bag file. Conversion issue and bagdata is useless. But battery status and stabilizer logs are already printed to console at 1000ms rate

only some small additions for data recording. safecontroller is also writing to bagfile allowing to find the controller mistake.

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

safecontroller works fine. still an issue with outYaw cause it overshoots - check comment in safecontroller code. safetycheck for localArea implemented and adjusted - switchoff if out of bounds.

fixed CrazyRadio crash on shutdown, fixed RateCommand.msg (according to Dusan's code), removed timers from PPSClient, still fucking around with SafeControllerService

reverted CrazyRadio, fixed PPSClient and fucked around with SafeControllerService. Also modified .gitignore to ignore all pyc files.

safeRateCommandPkg added as Output from safeController. This gets then pubslished via callbackRateCommand.

Publishers and callbacks to send data to crazyradio.py added to PPSClient.pps; Crayzradio node added to ppsLaunch.launch; Subcriber added to Crazyradio.py which successfully subscribes to motorCommand even if no cf is connected.