Updated mediawiki/extensions
Project: mediawiki/extensions/AutomaticBoardWelcome  38b8a12f060fbea5efbe7cf22776595203586b69

Migrate to JSON i18n

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

Change-Id: Iedcfc33edc4eba25ef84b877323183b5c63a8d75