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/ui/basic/impl/BasicPackageImpl.java
* <!-- end-user-doc -->
	 * @generated
	 * @ordered
	 */
	public static final int PART__ELEMENT_ID = PART_SASH_CONTAINER_ELEMENT__ELEMENT_ID;
	/**
	 * The feature id for the '<em><b>Tags</b></em>' attribute list.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 * @ordered
	 */
	public static final int PART__TAGS = PART_SASH_CONTAINER_ELEMENT__TAGS;
	/**
	 * The feature id for the '<em><b>Widget</b></em>' attribute.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 * @ordered
	 */
	public static final int PART__WIDGET = PART_SASH_CONTAINER_ELEMENT__WIDGET;
	/**
	 * The feature id for the '<em><b>Renderer</b></em>' attribute.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 * @ordered
	 */
	public static final int PART__RENDERER = PART_SASH_CONTAINER_ELEMENT__RENDERER;
	/**