Merge branch 'M_PI' into develop

App/src/TestFormFactor.cpp

App/src/TestInfLongBox.cpp

App/src/TestInfLongRipple1.cpp

App/src/TestInfLongRipple2.cpp

App/src/TestMiscellaneous.cpp

App/src/TestPolarizedMeso.cpp

App/src/TestRootTree.cpp

Core/Algorithms/inc/FTDistributions.h

Core/Algorithms/src/DWBADiffuseReflection.cpp

Core/Algorithms/src/DWBASimulation.cpp

Core/Algorithms/src/Distributions.cpp

Core/Algorithms/src/FTDistributions.cpp

Core/Algorithms/src/IInterferenceFunctionStrategy.cpp

Core/Algorithms/src/IsGISAXSMorphologyFileStrategy.cpp

Core/Algorithms/src/LayerStrategyBuilder.cpp

Core/Algorithms/src/MultiLayerDWBASimulation.cpp

Core/Algorithms/src/MultiLayerRoughnessDWBASimulation.cpp

Core/Algorithms/src/SpecularMatrix.cpp

Core/FormFactors/inc/IFormFactor.h

Core/FormFactors/inc/IFormFactorBornSeparable.h