Improvement on histogram/FitSuite interface, most of functional tests are working.

App/src/TestFumiliLMA.cpp

Core/Algorithms/inc/GISASSimulation.h

Core/Algorithms/src/GISASSimulation.cpp

Core/PythonAPI/src/GISASSimulation.pypp.cpp

Core/PythonAPI/src/IHistogram.pypp.cpp

Core/PythonAPI/src/IntensityDataFunctions.pypp.cpp

Core/Tools/inc/CumulativeValue.h

Core/Tools/inc/IHistogram.h

Core/Tools/inc/IntensityDataFunctions.h

Core/Tools/inc/Numeric.h

Core/Tools/src/IHistogram.cpp

Core/Tools/src/IntensityDataFunctions.cpp

.../fitting/ex02_FitCylindersAndPrisms/FitCylindersPrisms.py

...ex02_FitCylindersAndPrisms/FitCylindersPrisms_detailed.py

Fit/FitKernel/inc/FitSuite.h

Fit/FitKernel/inc/FitSuiteParameters.h

Fit/FitKernel/src/FitSuite.cpp

Fit/FitKernel/src/FitSuiteParameters.cpp

Fit/FitKernel/src/FitSuitePrintObserver.cpp

Fit/FitKernel/src/MinimizerTest.cpp