Localisation updates from http://translatewiki.net.

Change-Id: I90fcf3f9118e3ac9294ac90a48bc91eb7baf3cfc
Localisation updates from https://translatewiki.net.

Change-Id: I3a40dbd214110c31d7193e5f67e22ab89c3d3091
Migrate to JSON i18n

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

Change-Id: Iefe19f081c125cf7eb8100ff0e946e3a64cd29e8