Updated mediawiki/extensions
Project: mediawiki/extensions/UniversalLanguageSelector  f2355dfd65c943b0d2be797cc341669f5eeacd57

Updating from ULS upstream

* Localization updates.
* Added localization for Dutch informal.
* Performance improvements - see
  https://github.com/wikimedia/jquery.uls/pull/122

Change-Id: I6a76097722ae7ab2774172838823d73da5050581