[j.triv] trivial cleanup ()

GUI/View/Device/AxisPropertyForm.cpp

GUI/View/Device/SpanPropertyForm.cpp

GUI/View/FitControl/MinimizerSettingsWidget.cpp

GUI/View/Instrument/DistributionSelector.cpp

GUI/View/Instrument/DistributionSelector.h

GUI/View/MaterialEditor/MaterialEditorDialog.cpp

GUI/View/Numeric/DoubleSpinBox.cpp

GUI/View/Numeric/NumWidgetUtil.cpp

GUI/View/Numeric/NumWidgetUtil.h

GUI/View/Numeric/NumberUtil.cpp

GUI/View/Numeric/NumberUtil.h

GUI/View/Numeric/SafeSpinBox.h

GUI/View/Sample/CoreAndShellForm.cpp

GUI/View/Sample/InterferenceForm.cpp

GUI/View/Sample/LayerEditorUtil.cpp

GUI/View/Sample/LayerForm.cpp

GUI/View/Sample/MaterialInplaceForm.cpp

GUI/View/Sample/MaterialInplaceForm.h

GUI/View/Sample/ParticleForm.cpp

GUI/View/Sample/SampleEditorController.cpp