Merge branch 'gray-out-calib-4' into 'master'

CMakeLists.txt

include/control.h

include/coordItem.h

include/coordinateStructs.h

include/coordinateSystemBox.h

include/extrCalibration.h

include/extrinsicBox.h

include/gridItem.h

include/imageItem.h

include/multiColorMarkerWidget.h

include/petrack.h

include/recognition.h

include/trackerReal.h

include/vector.h

include/worldImageCorrespondence.h

src/colorPlot.cpp

src/control.cpp

src/coordItem.cpp

src/coordinateSystemBox.cpp

src/extrCalibration.cpp