Updated mediawiki/extensions
Project: mediawiki/extensions/Translate  81acf0507ca1006c5e59db98a6a6acf6c96d6993
null
(bug 42940) Better handling of invalid group IDs

* Show a group in the selector only if it's one of
  the recognized groups.
* Fix the API so that it won't add empty strings
  as recent group IDs.

Change-Id: I416274376e53010e61b170eed57684349e4ad8c3