message: fix: use random nickname for bookmarks without nick
diff: @@ -7,6 +7,7 @@ import Form from '@connection/Form';
  import JID from '@src/JID';
  import Log from '@util/Log';
  import { $build } from '@vendor/Strophe';
  +import UUID from '@util/UUID';
  NS.register('BOOKMARKS', 'storage:bookmarks');
  @@ -54,7 +55,7 @@ export class PubSubService extends AbstractService {
  let jid = new JID(element.getAttribute('jid'));
  let alias = element.getAttribute('name');
  let nickElement = element.getElementsByTagName('nick');
  - let nickname = nickElement.length === 1 ? nickElement[0].textContent : undefined;
  + let nickname = nickElement.length === 1 ? nickElement[0].textContent : UUID.v4().split('-')[0];
  let passwordElement = element.getElementsByTagName('password');
  let password = passwordElement.length === 1 ? passwordElement[0].textContent : undefined;
  let autoJoin = element.getAttribute('autojoin') === 'true';
  