Merge branch 'simplify' into 'develop'

GUI/View/Fit/MinimizerSettingsWidget.cpp

GUI/View/Fit/MinimizerSettingsWidget.h

GUI/View/Intensity/IntensityDataPropertyWidget.cpp

GUI/View/Intensity/IntensityDataPropertyWidget.h

GUI/View/Mask/MaskEditorPropertyPanel.cpp

GUI/View/Mask/MaskEditorPropertyPanel.h

GUI/View/Projection/ProjectionsPropertyPanel.cpp

GUI/View/Projection/ProjectionsPropertyPanel.h

GUI/View/PropertyEditor/ComponentEditor.cpp

GUI/View/PropertyEditor/ComponentEditor.h

GUI/View/PropertyEditor/ComponentFlatView.cpp

GUI/View/PropertyEditor/ComponentFlatView.h

GUI/View/PropertyEditor/ComponentTreeActions.cpp

GUI/View/PropertyEditor/ComponentTreeActions.h

GUI/View/PropertyEditor/ComponentTreeView.cpp

GUI/View/PropertyEditor/ComponentTreeView.h

GUI/View/PropertyEditor/ComponentView.h

GUI/View/PropertyEditor/PropertyWidgetItem.cpp

GUI/View/PropertyEditor/PropertyWidgetItem.h

GUI/View/PropertyEditor/TestComponentView.cpp