Localisation updates from https://translatewiki.net.

Change-Id: I215a6db3adb134029506564981a805d69cef5402
Localisation updates from https://translatewiki.net.

Change-Id: I78ecba494d68492e94e29681596466006f2e28b2
Migrate to JSON i18n

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

Change-Id: Ia781aac1b2ef545f4a2232ace2b09b28ff52f98e