Localisation updates from https://translatewiki.net.

Change-Id: Iab2c71e2516203a7a457d229c07098e8bb8a79a5
Localisation updates from https://translatewiki.net.

Change-Id: Iee0d8f6271a85fff73ef7444c287ab4acc881cce
Migrate to JSON i18n

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

Change-Id: Ie9889b54b4037a4713c730ee1a02654981b8929c