Fit no longer depends on Varia

GUI/Mapper/ComponentProxyStrategy.cpp

GUI/Models/Data/DataProperties.cpp

GUI/Models/Fit/FitParameterItems.cpp

GUI/Models/Fit/FitParameterProxyModel.cpp

GUI/Models/Fit/ModelPath.cpp

GUI/Models/Fit/ModelPath.h

GUI/Models/Job/FitParameterHelper.cpp

GUI/Models/Job/ParameterTreeUtils.cpp

GUI/Models/Parameter/ParameterTreeItems.cpp

GUI/Models/Project/OutputDataIOService.cpp

GUI/Models/Sample/ParticleCoreShellItem.cpp

GUI/Models/Types/DoubleDescriptor.cpp

GUI/Views/FitWidgets/ParameterTuningDelegate.cpp

GUI/Views/SampleDesigner/MaterialInplaceForm.cpp