message: frontend: Add Namespace field to Role details page
diff: @@ -41,6 +41,10 @@ const Details = ({metadata, rules}) => <div>
  <dl>
  <dt>Role Name</dt>
  <dd>{metadata.name}</dd>
  + {metadata.namespace && <div>
  + <dt>Namespace</dt>
  + <dd><ResourceLink kind="namespace" name={metadata.namespace} /></dd>
  + </div>}
  </dl>
  </div>
  <div className="col-xs-6">
  