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/PartImpl.java
return getContributionURI();
			case BasicPackageImpl.PART__OBJECT:
				return getObject();
			case BasicPackageImpl.PART__PERSISTED_STATE:
				if (coreType) return ((EMap.InternalMapView<String, String>)getPersistedState()).eMap();
				else return getPersistedState();
			case BasicPackageImpl.PART__CONTEXT:
				return getContext();
			case BasicPackageImpl.PART__VARIABLES:
				return getVariables();
			case BasicPackageImpl.PART__PROPERTIES:
				if (coreType) return ((EMap.InternalMapView<String, String>)getProperties()).eMap();
				else return getProperties();
			case BasicPackageImpl.PART__LABEL:
				return getLabel();
			case BasicPackageImpl.PART__ICON_URI:
				return getIconURI();
			case BasicPackageImpl.PART__TOOLTIP:
				return getTooltip();
			case BasicPackageImpl.PART__LOCAL_LABEL:
				return getLocalLabel();
			case BasicPackageImpl.PART__LOCAL_TOOLTIP:
				return getLocalTooltip();
			case BasicPackageImpl.PART__LOCAL_IMAGE:
				return getLocalImage();
			case BasicPackageImpl.PART__HANDLERS:
				return getHandlers();
			case BasicPackageImpl.PART__DIRTY:
				return isDirty();
			case BasicPackageImpl.PART__BINDING_CONTEXTS: