Fixed Roomba Open (Serial) Interface

Fixed interface commands to follow the interface version
that is used:
http://www.irobot.lv/uploaded_files/File/iRobot_Roomba_500_Open_Interface_Spec.pdf
Fixed small bug in test GUI to show case with 4 bytes

Also added default case which is used for schedule opt code
with 15 parameters.
just some fix attempts
fixed POIs position mapping back to a working one
First steps of tracing
updateLoc function to mapQGraphicsView. Unfinished