drop m_ from expand boolean var

GUI/Model/Beam/BeamDistributionItem.cpp

GUI/Model/Beam/BeamDistributionItem.h

GUI/Model/Beam/SourceItems.cpp

GUI/Model/Beam/SourceItems.h

GUI/Model/Descriptor/AxisProperty.cpp

GUI/Model/Descriptor/AxisProperty.h

GUI/Model/Detector/DetectorItem.cpp

GUI/Model/Detector/DetectorItem.h

GUI/Model/Device/InstrumentItems.cpp

GUI/Model/Device/InstrumentItems.h

GUI/Model/Sample/CompoundItem.cpp

GUI/Model/Sample/CompoundItem.h

GUI/Model/Sample/CoreAndShellItem.cpp

GUI/Model/Sample/CoreAndShellItem.h

GUI/Model/Sample/LayerItem.cpp

GUI/Model/Sample/LayerItem.h

GUI/Model/Sample/MesocrystalItem.cpp

GUI/Model/Sample/MesocrystalItem.h

GUI/Model/Sample/ParticleItem.cpp

GUI/Model/Sample/ParticleItem.h