Updated mediawiki/extensions
Project: mediawiki/extensions/ShoutBox  83accad83fcd54815dd71fc372c64d6eb317dbe6

Migrate to JSON i18n

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

Change-Id: I43768d119ca1dd828314fb0d3311ffd16b8228a8