Bug 325852 Add description attribute to MPartDescriptor/MPart
Adding this new attribute we could e.g. show additional informations about a Part in Show View-Dialog, ...
bundles/org.eclipse.e4.ui.model.workbench/src/org/eclipse/e4/ui/model/application/descriptor/basic/impl/PartDescriptorImpl.java
case BasicPackageImpl.PART_DESCRIPTOR__LOCAL_LABEL: return UiPackageImpl.UI_LABEL__LOCAL_LABEL;
				case BasicPackageImpl.PART_DESCRIPTOR__LOCAL_TOOLTIP: return UiPackageImpl.UI_LABEL__LOCAL_TOOLTIP;
				case BasicPackageImpl.PART_DESCRIPTOR__LOCAL_IMAGE: return UiPackageImpl.UI_LABEL__LOCAL_IMAGE;
				default: return -1;
			}
		}
		if (baseClass == MHandlerContainer.class) {
			switch (derivedFeatureID) {
				case BasicPackageImpl.PART_DESCRIPTOR__HANDLERS: return CommandsPackageImpl.HANDLER_CONTAINER__HANDLERS;
				default: return -1;
			}
		}
		if (baseClass == MBindings.class) {
			switch (derivedFeatureID) {
				case BasicPackageImpl.PART_DESCRIPTOR__BINDING_CONTEXTS: return CommandsPackageImpl.BINDINGS__BINDING_CONTEXTS;
				default: return -1;
			}
		}
		return super.eBaseStructuralFeatureID(derivedFeatureID, baseClass);
	}
	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public int eDerivedStructuralFeatureID(int baseFeatureID, Class<?> baseClass) {
		if (baseClass == MUILabel.class) {
			switch (baseFeatureID) {
				case UiPackageImpl.UI_LABEL__LABEL: return BasicPackageImpl.PART_DESCRIPTOR__LABEL;