[from_DoubleDescriptor] GUI: explicit serialization of DoubleProperty ()

GUI/Model/Descriptor/AxisProperty.cpp

GUI/Model/Descriptor/DistributionItems.cpp

GUI/Model/Descriptor/DistributionItems.h

GUI/Model/Descriptor/DoubleProperty.cpp

GUI/Model/Descriptor/DoubleProperty.h

GUI/Model/Device/BackgroundItems.cpp

GUI/Model/Device/BeamItems.cpp

GUI/Model/Device/FootprintItems.cpp

GUI/Model/Device/InstrumentItems.cpp

GUI/Model/Device/RectangularDetectorItem.cpp

GUI/Model/Device/ResolutionFunctionItems.cpp

GUI/Model/Sample/CompoundItem.cpp

GUI/Model/Sample/CoreAndShellItem.cpp

GUI/Model/Sample/FormFactorItems.cpp

GUI/Model/Sample/FormFactorItems.h

GUI/Model/Sample/InterferenceItems.cpp

GUI/Model/Sample/Lattice2DItems.cpp

GUI/Model/Sample/LayerItem.cpp

GUI/Model/Sample/LayerRoughnessItems.cpp

GUI/Model/Sample/MesocrystalItem.cpp