Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  9467f736dc1d352f9830dc9f8f27f412db6006d8

Change option from "lang" to "valuelang"

This requires https://github.com/wmde/ValueView/pull/79
Please read the description there.

Change-Id: I4ef2288e91c7830e8f6b0a3d937b789f0ead2554