Updated mediawiki/extensions
Project: mediawiki/extensions/GettingStarted  cfd93731403871035631303f2f0f8608c1f86643

Migrate to JSON i18n

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

Change-Id: I16685fbcb83634bc19ea5789208b2b0b9fcdce1d