Updated mediawiki/extensions
Project: mediawiki/extensions/SkinPerPage  4bbc4023bd0a607bba138b172793c32724d1a49d

Migrate to JSON i18n

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

Change-Id: I8c316da93f980cf9a1c73808ce96b9da66d3ce48