Updated mediawiki/extensions
Project: mediawiki/extensions/MSSQLBackCompat  0aca1ac504a884eb889cb8ba94ea7acdedb5425b

Migrate to JSON i18n

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

Change-Id: Ie0e7f9f1a8732e6c59775aae4fc8f4954c32ebc1