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/impl/UiPackageImpl.java
* @generated
	 * @ordered
	 */
	public static final int ELEMENT_CONTAINER__CHILDREN = UI_ELEMENT_FEATURE_COUNT + 0;
	/**
	 * The feature id for the '<em><b>Selected Element</b></em>' reference.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 * @ordered
	 */
	public static final int ELEMENT_CONTAINER__SELECTED_ELEMENT = UI_ELEMENT_FEATURE_COUNT + 1;
	/**
	 * The number of structural features of the '<em>Element Container</em>' class.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 * @ordered
	 */
	public static final int ELEMENT_CONTAINER_FEATURE_COUNT = UI_ELEMENT_FEATURE_COUNT + 2;
	/**
	 * The meta object id for the '{@link org.eclipse.e4.ui.model.application.ui.impl.GenericStackImpl <em>Generic Stack</em>}' class.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see org.eclipse.e4.ui.model.application.ui.impl.GenericStackImpl
	 * @see org.eclipse.e4.ui.model.application.ui.impl.UiPackageImpl#getGenericStack()
	 * @generated
	 */
	public static final int GENERIC_STACK = 6;
	/**