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.

merging stuff from Marco with mine

dis is merge

studentParams.yaml added that will be used by students to change their crazyflie, etc

PPSClient.cpp changed: gets data from ViconDataPublisher and extracts data according the chosen crazyflie. TODO: connection with controller

Added QGraphicsView and QGraphicsScene. Can draw rectangles, need to find out what is wrong with refreshing

Updated crazyflie_ws folder with Angel's new stuff. Added the script setup_and_compilation.sh which sets up the system locally and compiles it, following instructions from WIKI page of the repository