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
return;
			case BasicPackageImpl.PART_DESCRIPTOR__CONTRIBUTION_URI:
				setContributionURI(CONTRIBUTION_URI_EDEFAULT);
				return;
		}
		super.eUnset(featureID);
	}
	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public boolean eIsSet(int featureID) {
		switch (featureID) {
			case BasicPackageImpl.PART_DESCRIPTOR__LABEL:
				return LABEL_EDEFAULT == null ? label != null : !LABEL_EDEFAULT.equals(label);
			case BasicPackageImpl.PART_DESCRIPTOR__ICON_URI:
				return ICON_URI_EDEFAULT == null ? iconURI != null : !ICON_URI_EDEFAULT.equals(iconURI);
			case BasicPackageImpl.PART_DESCRIPTOR__TOOLTIP:
				return TOOLTIP_EDEFAULT == null ? tooltip != null : !TOOLTIP_EDEFAULT.equals(tooltip);
			case BasicPackageImpl.PART_DESCRIPTOR__LOCAL_LABEL:
				return LOCAL_LABEL_EDEFAULT == null ? localLabel != null : !LOCAL_LABEL_EDEFAULT.equals(localLabel);
			case BasicPackageImpl.PART_DESCRIPTOR__LOCAL_TOOLTIP:
				return LOCAL_TOOLTIP_EDEFAULT == null ? localTooltip != null : !LOCAL_TOOLTIP_EDEFAULT.equals(localTooltip);
			case BasicPackageImpl.PART_DESCRIPTOR__LOCAL_IMAGE:
				return LOCAL_IMAGE_EDEFAULT == null ? localImage != null : !LOCAL_IMAGE_EDEFAULT.equals(localImage);
			case BasicPackageImpl.PART_DESCRIPTOR__HANDLERS:
				return handlers != null && !handlers.isEmpty();
			case BasicPackageImpl.PART_DESCRIPTOR__BINDING_CONTEXTS: