Updated mediawiki/extensions
Project: mediawiki/extensions/WhoIsWatching  89d5788779c49a35a9a1c18c4992d398133107d2

Migrate to JSON i18n

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

Change-Id: Id20f0a3a6c9c81f5415302429dbb9fb83fc05162