avoid duplication of class name in 'new' statements

Base/Axis/FixedBinAxis.cpp

Base/Py/PyUtils.cpp

Device/Data/OutputData.cpp

Device/Data/OutputData.h

Device/Histo/Histogram1D.cpp

Device/Histo/Histogram2D.cpp

GUI/Model/Fit/FitParameterProxyModel.cpp

GUI/Model/Fit/MinimizerItem.cpp

GUI/Model/Fit/ParameterTuningModel.cpp

GUI/Model/From/FromDomain.cpp

GUI/Model/Instrument/InstrumentModel.cpp

GUI/Model/Material/MaterialModel.cpp

GUI/Model/Sample/SampleModel.cpp

GUI/Model/Session/SessionModel.cpp

GUI/View/Common/ItemComboWidget.cpp

GUI/View/Common/ItemSelectorWidget.cpp

GUI/View/Common/ItemStackWidget.cpp

GUI/View/Common/ItemViewOverlayButtons.cpp

GUI/View/Common/StyledToolBar.cpp

GUI/View/Fit/FitActivityPanel.cpp