Updated mediawiki/extensions
Project: mediawiki/extensions/MultiUpload  b9b69e23e34a00252d0099663b6228ad10b1a71f

Migrate to JSON i18n

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

Change-Id: I1fdd2ad5ed4f06f44a77a381ada3eea2309dcc0a