Updated mediawiki/extensions
Project: mediawiki/extensions/GettingStarted  4972a91fc1a0d70dd71f437aa97aa0a9ed9e7857

Don't conditionally register hooks

ExtensionFunctions are called whenever MediaWiki is initialized, but
the hooks will only be called whenever neccessary, so move the
conditionals (whether CentralAuth exists) into the hook function
itself.

Change-Id: Id61b9f57a71a4a7c7d06d6967826eaafabd31b40