Cleanup in ChiSquaredModule

App/src/TestFittingModule1.cpp

App/src/TestFittingModule2.cpp

App/src/TestFittingModule3.cpp

App/src/TestFittingModule4.cpp

App/src/TestFumiliLMA.cpp

App/src/TestIsGISAXS12.cpp

App/src/TestMiscellaneous.cpp

Core/Algorithms/inc/ChiSquaredFrequency.h

Core/Algorithms/inc/ChiSquaredModule.h

Core/Algorithms/inc/IChiSquaredModule.h

Core/Algorithms/inc/IFittingDataSelector.h

Core/Algorithms/src/ChiSquaredFrequency.cpp

Core/Algorithms/src/ChiSquaredModule.cpp

Core/Algorithms/src/IChiSquaredModule.cpp

Core/Algorithms/src/IFittingDataSelector.cpp

Examples/python/fitting/ex05_FitWithMasks/FitWithMasks.py

Fit/FitKernel/inc/FitSuite.h

Fit/FitKernel/inc/FitSuiteObjects.h

Fit/FitKernel/src/FitSuite.cpp

Fit/FitKernel/src/FitSuiteObjects.cpp