Merge branch 'master' of https://i61wiki.itec.uka.de/git/robot-api

source/RobotAPI/motioncontrol/MotionControl.h

source/RobotAPI/motioncontrol/ZeroForceControl.cpp

source/RobotAPI/motioncontrol/ZeroForceControl.h

...I/statecharts/GraspingWithTorques/GraspingWithTorques.cpp

...API/statecharts/GraspingWithTorques/GraspingWithTorques.h

source/RobotAPI/statecharts/MovePlatform/MovePlatform.cpp

source/RobotAPI/statecharts/MovePlatform/MovePlatform.h

source/RobotAPI/statecharts/MovePlatform/PlatformContext.h

...echarts/MovePlatformToLandmark/MovePlatformToLandmark.cpp

...atecharts/MovePlatformToLandmark/MovePlatformToLandmark.h

source/RobotAPI/statecharts/OpenHand/OpenHand.cpp

source/RobotAPI/statecharts/OpenHand/OpenHand.h

source/RobotAPI/units/CMakeLists.txt

source/RobotAPI/units/ForceTorqueUnit.cpp

source/RobotAPI/units/ForceTorqueUnit.h

source/RobotAPI/units/HapticObserver.cpp

source/RobotAPI/units/HapticObserver.h

source/RobotAPI/units/HapticUnit.cpp

source/RobotAPI/units/HapticUnit.h

source/RobotAPI/units/HeadIKUnit.h