Merge branch 'master' of gitlab.com:ArmarX/RobotAPI

...e/RobotAPI/components/ArViz/Client/elements/RobotHand.cpp

source/RobotAPI/components/ArViz/Coin/VisualizationRobot.cpp

source/RobotAPI/gui-plugins/ArViz/ArVizWidget.ui

source/RobotAPI/gui-plugins/ArViz/ArVizWidgetController.cpp

source/RobotAPI/gui-plugins/ArViz/LayerInfoTree.cpp

source/RobotAPI/gui-plugins/ArViz/LayerInfoTree.h

source/RobotAPI/libraries/ArmarXObjects/ObjectFinder.cpp

source/RobotAPI/libraries/ArmarXObjects/ObjectFinder.h

source/RobotAPI/libraries/core/CMakeLists.txt

source/RobotAPI/libraries/core/json_conversions.h