Localisation updates from https://translatewiki.net.

Change-Id: I41c74eaa6ec4b8d3827845e3cf6d6f5d73ca787c
Localisation updates from https://translatewiki.net.

Change-Id: I623ec3e15e2502f472467d590be4f25bdb447969
Migrating to use new JSON message backend.

Change-Id: I9fd76b9d20205a8cdf683803b0575c0fd99e8578
Adding licensing information

Change-Id: I8368a44231536f3dee5c2801227aabd0ec5245cc
Fix license name

Change-Id: I1f0dd856b9077bf19b2359039ca23cea609fb4fc
Localisation updates from https://translatewiki.net.

Change-Id: Ia7909d782fcba67a5e41c71d5ce7c14dc61d7fd3
Post $wgMessagesDirs above $wgExtensionMessagesFiles

Done for all extensions that were migrated to use JSON i18n, so fixing
this for consistency sake.

Change-Id: I94dcd585dcb1d67e5dc7f374e7dbde5fb7bb6f19