Merge branch 'RefSampleModel_etc' into 'develop'

GUI/Model/Job/ParameterTreeUtils.cpp

GUI/Model/Sample/InterferenceItems.cpp

GUI/Model/Sample/InterferenceItems.h

GUI/Model/Sample/Lattice2DItems.cpp

GUI/Model/Sample/Lattice2DItems.h

GUI/Model/Sample/LayerItem.cpp

GUI/Model/Sample/LayerItem.h

GUI/View/Main/ActionManager.cpp

GUI/View/Main/ActionManager.h

GUI/View/SampleDesigner/RealSpacePanel.cpp

GUI/View/SampleDesigner/RealSpacePanel.h

GUI/View/SampleDesigner/SampleView.cpp

GUI/View/SampleDesigner/ScriptPanel.cpp

GUI/View/SampleDesigner/ScriptPanel.h

Tests/Unit/GUI/TestMapperForItem.cpp

Tests/Unit/GUI/TestParaCrystalItems.cpp