Updated mediawiki/extensions
Project: mediawiki/extensions/HidePrefix  89f4b71923b999afba44ed88258793b2dfb4c125

Migrate to JSON i18n

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

Change-Id: Idf465fe9b68436a66d34e6252d4efb19c29f98e4