Localisation updates from http://translatewiki.net.

Change-Id: Ice9ae55fedace6e4e533f12495c73ad19bafc675
Localisation updates from https://translatewiki.net.

Change-Id: I61cc58339fa3ab459d3634bcf5af74449606bba1
Localisation updates from https://translatewiki.net.

Change-Id: Id050d66a447ea4c33e26654d2ba22d3baa1cdd20
Localisation updates from https://translatewiki.net.

Change-Id: I710cfe9aab7cf6316c8c4d0eeea80922c518d43e
Localisation updates from https://translatewiki.net.

Change-Id: I92bac12d61e33cfb98a0b50b8273594c75ce46c2
Migrate to JSON i18n

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

Change-Id: Iac81e990d5d4d490dc59c12996d695fc9e4d298e
Remove zh-tw in favour of zh-hant

Change-Id: Ie0b760b0b07fa21152a7cf0217ba6a7bdea77137