Updated mediawiki/extensions
Project: mediawiki/extensions/SkinPerNamespace  c2679c0ba8b83f25a13c686246e515ec67b78047

Migrate to JSON i18n

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

Change-Id: If5da23af211ee3f5829e30f37fa6d389c0e1c770