Localisation updates from https://translatewiki.net.

Change-Id: I66fbfcd6ee654434429e6df8260b99483d398d1b
Localisation updates from https://translatewiki.net.

Change-Id: Ie29596f8f583ce8628dfa489bebdcb0aeeb866ec
Migrate to JSON i18n

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

Change-Id: Ie40ebdfcebeb6f590a75b08b358efbbcf1e85f78