Updated mediawiki/extensions
Project: mediawiki/extensions/OAI  501752b96d0effade8dab3c3767d9921f3f59db2

Migrate to JSON i18n

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

Change-Id: I830ff36814df8e93a4861f51f5ea6a7b875ce157