Updated mediawiki/extensions
Project: mediawiki/extensions/EditSubpages  8c0137984ac7008cf9f9b0f6c7e182c12769449f

Migrate to JSON i18n

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

Change-Id: I02a1c43b4b52466b82491e4dde94b24e68656c68