Merge branch 'feature/calib-improvements' into 'master'

applications/gui2/src/modules/calibration/calibration.cpp

applications/gui2/src/modules/calibration/calibration.hpp

applications/gui2/src/modules/calibration/extrinsic.cpp

applications/gui2/src/modules/calibration/intrinsic.cpp

applications/gui2/src/views/calibration/extrinsicview.cpp

applications/gui2/src/views/calibration/visualization.hpp

applications/gui2/src/views/calibration/widgets.cpp

applications/gui2/src/views/thumbnails.cpp

applications/gui2/src/widgets/imageview.cpp

applications/gui2/src/widgets/imageview.hpp

components/calibration/include/ftl/calibration/extrinsic.hpp

components/calibration/include/ftl/calibration/optimize.hpp

...onents/calibration/include/ftl/calibration/structures.hpp

components/calibration/src/extrinsic.cpp

components/calibration/src/object.cpp

components/calibration/src/optimize.cpp

components/calibration/src/structures.cpp

components/codecs/include/ftl/codecs/shapes.hpp

...ts/rgbd-sources/src/sources/stereovideo/rectification.cpp

...ts/rgbd-sources/src/sources/stereovideo/rectification.hpp