Updated mediawiki/extensions
Project: mediawiki/extensions/CentralAuth  1cc67eee6199216726e56b9c877bdd889bb5c44a

Simplify Special:GlobalGroupMembership

Remove unneeded known wiki selector as there can only be
one global account per name, so it doesn't matter where that
account exists or is attached.
Also minor style changes.

Bug: 15651
Change-Id: I0b4b262acb8550cd0281eadc9adabcb5f299f385