Updated mediawiki/extensions
Project: mediawiki/extensions/CategoryTests  b624bf2f81794917ca8beb988ac255bb5aaf55cd

Migrate to JSON i18n

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

Change-Id: Ib15dcc1771dd804e1488c95f1fcabe406f31e46e