Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  4cc78e7aec75801a0e85806d0e5eb470cc923a57

(Bug 46466) Fix removed underscores in site id

A fix in ItemByTitle that should only strip underscores in "page"
also strips underscores in "site". That makes some language code
fail, and then the page lookup fail.

This is not properly tested yet.

Change-Id: I61acaeabdf44d80dde9b129c4de51e10e4004cd8