rename SimulationResult::axis to convertedBinCenters

CHANGELOG

Device/Histo/SimulationResult.cpp

Device/Histo/SimulationResult.h

Examples/varia/BasicPolarizedReflectometry.py

Examples/varia/FootprintCorrection.py

Examples/varia/PolarizedNoAnalyzer.py

Examples/varia/PolarizedNonperfectAnalyzerPolarizer.py

Examples/varia/PolarizedSpinAsymmetry.py

Examples/varia/PolarizedSpinFlip.py

Examples/varia/RoughnessModel.py

Tests/UnitTests/Core/Fresnel/SpecularSimulationTest.cpp

Wrap/Python/ba_plot.py

auto/Wrap/doxygenDevice.i

auto/Wrap/libBornAgainDevice.py

auto/Wrap/libBornAgainDevice_wrap.cpp