Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  9f91109d0eecfdcdf2a6cdcfee4b192ba74fc118

Clean up Scribunto code in Client

A bit of refactoring based on PHPStorm's static code analysis. Sure,
there is more to do, especially in the case where Claim(s) needs to
be replaced with Statement(s). A job for an other day.

Change-Id: Icac25536e73021d5a573c6c9429092d2e9b4c970