Localisation updates from https://translatewiki.net.

Change-Id: I225881a3bc21ddcefd972f18e958d7a10a3bc45c
Localisation updates from https://translatewiki.net.

Change-Id: I5fa0cc9400bb159cd521553c14e9c692a3f43cd4
Migrate to JSON i18n

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

Change-Id: Id5c9947fc6ce36d394bcb3b8cb748665ce6cdae5