HUGE changeset, lots of placeholders in the UI, added AI,Tracker,PID,Joystick tabs
fixed hover mode
lots of little updates, can now set yaw offsets, set north, turn ros publishing on and off, update the AI update speed, fixed some minor bugs (eg when disconnecting yaw=None), added some minor UI updates
small bug fixes
finished kinect tracking for now
added rviz for kinect stuff
updated manifest
small fixes in launch files
added ROS master check qdialog
added changesto support multiple crazyflie connections (using two dongles for now)
first tests with multiple flies
forgot to add ui
fixed bracket type when sending motor commands
added utilisation.msg
Merge branch 'master' of https://github.com/omwdunkley/crazyflieROS into joyManager