Localisation updates from https://translatewiki.net.

Change-Id: If06f729e62d23a07dd93045ab71d53738e8e8281
Localisation updates from https://translatewiki.net.

Change-Id: Ibbefce4886204c775ed67a39411f5ac2d392f742
Migrate to JSON i18n

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

Change-Id: If67df9fe5a6ca043cb405a783d4a414a02ce4772