Merge remote-tracking branch 'origin/develop' into GUI-2

Base/Axis/IAxis.cpp

Base/Axis/IAxis.h

Base/Axis/PointwiseAxis.h

Base/Const/PhysicalConstants.h

Base/Const/Units.h

Base/Math/Bessel.h

Base/Math/Constants.h

Base/Math/FourierTransform.cpp

Base/Math/FourierTransform.h

Base/Math/Functions.h

Base/Math/IntegratorGK.h

Base/Math/IntegratorMCMiser.h

Base/Math/Numeric.h

Base/Math/Precomputed.h

Base/Pixel/IPixel.h

Base/Pixel/PolarizationHandler.h

Base/Pixel/SimulationElement.h

Base/Progress/DelayedProgressCounter.h

Base/Progress/ProgressHandler.h

Base/Py/PyCore.h