Updated mediawiki/extensions
Project: mediawiki/extensions/VectorBeta  bd18723fc1ff9c21102df7340526c433afe27234

Migrate to JSON i18n

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

Change-Id: I1a43083813296b1538c4cf04ff8b753b1a2fef4b