Updated mediawiki/extensions
Project: mediawiki/extensions/SecureHTML  f969bf569bf957219cef24ae54f8c6c9ff83eef1

Migrate to JSON i18n

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

Change-Id: I07ac179aa18981b84d0762e5a778b45a6072e516