Localisation updates from http://translatewiki.net.

Change-Id: Ib26890370036d0271686af5aa17a9155c74bedad
Localisation updates from https://translatewiki.net.

Change-Id: I2358b20d78281d39f28983172e74948dc821e42f
Localisation updates from https://translatewiki.net.

Change-Id: I043f455a4ce96d35091efb709bab8e7dc35ce0c9
Migrate to JSON i18n

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

Change-Id: I5bccbc8ab969502bedd287799915aae20d4dff5f