rename -> Mesocrystal

Examples/scatter2d/Mesocrystal.py

Examples/scatter2d/Mesocrystal2.py

GUI/Model/BaseItem/SessionItem.h

GUI/Model/CatSample/ItemWithParticlesCatalog.cpp

GUI/Model/CatSample/ItemWithParticlesCatalog.h

GUI/Model/FromCore/GUIExamplesFactory.cpp

GUI/Model/FromCore/ItemizeSample.cpp

GUI/Model/FromCore/ItemizeSimulation.cpp

GUI/Model/Model/ParameterTreeUtils.cpp

GUI/Model/Sample/LayerItem.cpp

GUI/Model/Sample/MesocrystalItem.cpp

GUI/Model/Sample/MesocrystalItem.h

GUI/Model/Sample/ParticleCompositionItem.cpp

GUI/Model/Sample/ParticleLayoutItem.cpp

GUI/Model/ToCore/SampleToCore.cpp

GUI/View/Realspace/RealSpaceBuilder.cpp

GUI/View/Realspace/RealSpaceBuilderUtils.cpp

GUI/View/Realspace/RealSpaceBuilderUtils.h

GUI/View/Realspace/RealSpaceMesocrystalUtils.cpp

GUI/View/Realspace/RealSpaceMesocrystalUtils.h