Updated mediawiki/extensions
Project: mediawiki/extensions/Variables  2e4cfb5f1ca73b249abedf2ab19d190004e62ec3

Migrate to JSON i18n

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

Change-Id: Ib58155cc792e9347229caa8e07bd591f0af644e4