Added methods for IOpenLoopControl interface. They have to be implemented yet
Fixed a wrong include
Implemented IOpenLoop interface methods by setting and returning torques
Workaround for issue with ControlBoardWrapper:

Implemented a dummy PidControl that implements only getOutput(s)
Now PWM (currently torques) are sent correctly to gazebo
Renamed some variables to comply with a to-be defined coding style.
referenceSpeed is now by default 10.0
Merge branch 'feature/openLoopControlInterface' into development

Conflicts:
	src/yarp_drivers/ControlBoardDriver.cpp