InstrumentItem.* files renamed to InstrumentItems.*

GUI/coregui/Models/DomainObjectBuilder.cpp

GUI/coregui/Models/DomainSimulationBuilder.cpp

GUI/coregui/Models/GUIObjectBuilder.cpp

GUI/coregui/Models/InstrumentItems.cpp

GUI/coregui/Models/InstrumentItems.h

GUI/coregui/Models/InstrumentModel.cpp

GUI/coregui/Models/ItemFactory.cpp

GUI/coregui/Models/JobItem.cpp

GUI/coregui/Models/JobItemUtils.cpp

GUI/coregui/Models/JobModel.cpp

GUI/coregui/Models/JobModelFunctions.cpp

GUI/coregui/Models/ModelPath.cpp

GUI/coregui/Models/TransformFromDomain.cpp

GUI/coregui/Views/ImportDataWidgets/ImportDataAssistant.cpp

...coregui/Views/ImportDataWidgets/LinkInstrumentManager.cpp

GUI/coregui/Views/InstrumentWidgets/DetectorEditorWidget.cpp

GUI/coregui/Views/InstrumentWidgets/DetectorMaskDelegate.cpp

...ui/Views/InstrumentWidgets/InstrumentComponentsWidget.cpp

...oregui/Views/InstrumentWidgets/InstrumentEditorWidget.cpp

.../Views/SimulationWidgets/SimulationDataSelectorWidget.cpp