Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  6a47e7d642aac98e950c122bb385ae1d97fb40fa

(bug 56684) Show Quantity details in diff.

This introduces QuantityDetailsFormatter and hooks it up
to be used in diffs.

Change-Id: I8ef2d0f0c96e404afe28e18bd6af839732df719d