Igcs 203 ar drone tilt control

The important change is the sendMoveCommand method in the iGCS/Comm/Interfaces/iGCS/iGCSMavLinkInterface.* files.  The rest was to support testing this new method.
Please factor the translation of the Quaternion-> normalized degrees into it's own method. The method can take in the CMDeviceMotion and return a struct of your our own or another CMQuaternion if it makes sense. Probably our own struct is better though. For instance:

typedef struct {
      float roll, pitch, yaw;
} GCSMAVMove