save one level in GUI/View hierarchy

GUI/View/Common/DataAccessWidget.cpp

GUI/View/Common/DataAccessWidget.h

GUI/View/Common/DataPropertyWidget.cpp

GUI/View/Common/DataPropertyWidget.h

GUI/View/Common/IntensityDataPropertyWidget.cpp

GUI/View/Common/IntensityDataPropertyWidget.h

GUI/View/Common/ItemComboToolbar.cpp

GUI/View/Common/ItemComboToolbar.h

GUI/View/Common/ItemComboWidget.cpp

GUI/View/Common/ItemComboWidget.h

GUI/View/Common/StyledToolbar.cpp

GUI/View/Common/StyledToolbar.h

GUI/View/Fit/FitParameterWidget.h

GUI/View/Fit/ParameterTuningWidget.cpp

GUI/View/Fit/ParameterTuningWidget.h

GUI/View/Fit/RunFitControlWidget.h

GUI/View/Fit/SliderSettingsWidget.h

GUI/View/Import/RealDataMaskWidget.h

GUI/View/Import/RealDataPresenter.h

GUI/View/Import/RealDataSelectorWidget.cpp