Localisation updates from http://translatewiki.net.

Change-Id: Ied64c3f461b77d843a366c6960f547343b19bb43
Localisation updates from https://translatewiki.net.

Change-Id: I9165d0034bd26eac11c5a0b745b0ced25c20a07c
Localisation updates from https://translatewiki.net.

Change-Id: Ia65dd16c1db602b033bf018175e37ec168ce43b1
Migrate to JSON i18n

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

Change-Id: I1dd1d85f85070e16238a029ec8f949abcdfe2983