Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  6780d7fe6d5a9a8c08d169486a496f27e562d86e

Migrate to JSON i18n

Procedure per https://www.mediawiki.org/wiki/Manual:GenerateJsonI18n.php
with shim.

Change-Id: I24fb0bbbd6fe3052886347628324c4850db1e18a