Localisation updates from https://translatewiki.net.

Change-Id: I80efb4efd437a5ba9cd00734e86f708dab25e980
Localisation updates from https://translatewiki.net.

Change-Id: Iada89c95fbd4baab8bc934e7112d35cd3339b064
Migrate to JSON i18n

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

Change-Id: I6104ddd6acca17861415a54e32ff58b424cce1dc