Updated mediawiki/extensions
Project: mediawiki/extensions/MediaWikiChat  541396a81f12d6fe1787b65e2bdde0474979a81a

Stop storing user names in DB

This means MWC is not affected by user renames, and just carries on with
the name being updated automatically

Change-Id: I4cfc9de3c90ed9a1cd0aac64b6cf223d94b3f337