rename xAxis <- getXaxis, and same for y

Device/Histo/Histogram1D.cpp

Device/Histo/Histogram2D.cpp

Device/Histo/IHistogram.cpp

Device/Histo/IHistogram.h

Device/Instrument/SpectrumUtils.cpp

Examples/python/utils/plot_intensity_data.py

Examples/python/utils/plot_intensity_data_diff.py

Tests/Functional/Python/PyCore/intensitydata.py

Tests/UnitTests/Core/Axes/Histogram1DTest.cpp

Tests/UnitTests/Core/Axes/Histogram2DTest.cpp

Tests/UnitTests/Core/Fresnel/DepthProbeSimulationTest.cpp

Wrap/python/plot_utils.py

auto/Wrap/doxygenDevice.i

auto/Wrap/libBornAgainDevice.py

auto/Wrap/libBornAgainDevice_wrap.cpp