Updated mediawiki/extensions
Project: mediawiki/extensions/CentralAuth  9fc18d93d95af269beb3b6c83a12eab8c519267a

Apply title normalization for global groups

This won't break on wikimedia wikis as all groups so far are in
the normalized forms. I didn't built in a fancy error reporting
as these functions are barely used.

Change-Id: I80e3a3c62d7a9d333cf62bba4d3009b18008383f