Localisation updates from http://translatewiki.net.

Change-Id: Ia3e8418890b948568b949f5d4f91201e1d9dac5d
Localisation updates from https://translatewiki.net.

Change-Id: I9afe791674cda176847836864190609a8a8f6607
Localisation updates from https://translatewiki.net.

Change-Id: If4cf70aa01ac486fe2b208244e7aba08b5b926da
Migrate to JSON i18n

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

Change-Id: I0ba46cabc5441238f2ce2d5a88610e8ca1f2fce0