Export sample: uniform lowercase

Core/Export/SampleToPython.cpp

Examples/Python/sim01_Particles/CylindersAndPrisms.py

Examples/Python/sim01_Particles/CylindersInBA.py

Examples/Python/sim01_Particles/CylindersInDWBA.py

...s/Python/sim01_Particles/CylindersWithSizeDistribution.py

Examples/Python/sim01_Particles/RotatedPyramids.py

...im01_Particles/TwoTypesOfCylindersWithSizeDistribution.py

Examples/Python/sim02_Complexes/BiMaterialCylinders.py

Examples/Python/sim02_Complexes/CoreShellNanoparticles.py

...ples/Python/sim02_Complexes/HexagonalLatticesWithBasis.py

Examples/Python/sim02_Complexes/MesoCrystal.py

...ples/Python/sim02_Complexes/ParticlesCrossingInterface.py

Examples/Python/sim03_Structures/ApproximationDA.py

Examples/Python/sim03_Structures/ApproximationLMA.py

Examples/Python/sim03_Structures/ApproximationSSCA.py

...les/Python/sim03_Structures/CosineRipplesAtRectLattice.py

Examples/Python/sim03_Structures/Interference1DLattice.py

...ython/sim03_Structures/Interference1DRadialParaCrystal.py

...n/sim03_Structures/Interference2DCenteredSquareLattice.py

...ples/Python/sim03_Structures/Interference2DParaCrystal.py