Bug 306576 Externalization/translation of strings in xmi files
Currently our e4xmi files have various hard-coded English strings that are presented to the user (in particular the "label" attributes). Is there some mechanism already defined for externalization/translation of NLS strings from these xmi files? If not, we need to define one. Creating a new xmi file from scratch for each language won't scale, and won't allow switching languages after the product is installed.
bundles/org.eclipse.e4.ui.model.workbench/src/org/eclipse/e4/ui/model/application/ui/basic/impl/PartImpl.java
getVariables().addAll((Collection<? extends String>)newValue);
				return;
			case BasicPackageImpl.PART__PROPERTIES:
				((EStructuralFeature.Setting)((EMap.InternalMapView<String, String>)getProperties()).eMap()).set(newValue);
				return;
			case BasicPackageImpl.PART__WIDGET:
				setWidget(newValue);
				return;
			case BasicPackageImpl.PART__RENDERER:
				setRenderer(newValue);
				return;
			case BasicPackageImpl.PART__TO_BE_RENDERED:
				setToBeRendered((Boolean)newValue);
				return;
			case BasicPackageImpl.PART__ON_TOP:
				setOnTop((Boolean)newValue);
				return;
			case BasicPackageImpl.PART__VISIBLE:
				setVisible((Boolean)newValue);
				return;
			case BasicPackageImpl.PART__PARENT:
				setParent((MElementContainer<MUIElement>)newValue);
				return;
			case BasicPackageImpl.PART__CONTAINER_DATA:
				setContainerData((String)newValue);
				return;
			case BasicPackageImpl.PART__CUR_SHARED_REF:
				setCurSharedRef((MPlaceholder)newValue);
				return;
			case BasicPackageImpl.PART__VISIBLE_WHEN: