Updated mediawiki/extensions
Project: mediawiki/extensions/NewSignupPage  cdd77544746039e059c9a4cc5495370ff4107619

Migrate to JSON i18n

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

Change-Id: Iae165ef96a05a42853ba9273663e8b2a8d3062b0