further warnings from clang-11: sort out override vs final

Base/Axis/ConstKBinAxis.h

Core/Simulation/OffSpecSimulation.h

Device/Detector/SimpleUnitConverters.h

GUI/coregui/Models/ParameterTranslators.h

Sample/Aggregate/InterferenceFunction1DLattice.h

Sample/Aggregate/InterferenceFunction2DLattice.h

Sample/Aggregate/InterferenceFunction2DParaCrystal.h

Sample/Aggregate/InterferenceFunction2DSuperLattice.h

Sample/Aggregate/InterferenceFunction3DLattice.h

Sample/Aggregate/InterferenceFunctionFinite2DLattice.h

Sample/Aggregate/InterferenceFunctionFinite3DLattice.h

Sample/Aggregate/InterferenceFunctionHardDisk.h

Sample/FFCompute/ComputeBA.h

Sample/FFCompute/ComputeBAPol.h

Sample/FFCompute/ComputeDWBA.h

Sample/FFCompute/ComputeDWBAPol.h

Sample/Fresnel/ScalarFresnelMap.h

Sample/Interference/DecouplingApproximationStrategy.h

Sample/Interference/SSCApproximationStrategy.h

Sample/Particle/FormFactorCoreShell.h