Localisation updates from https://translatewiki.net.
Update langdb with codes and autonyms

This removes inconsistencies with MediaWiki's Names.php's changes in the
past 8 months, where it comes to languages codes present in MediaWiki but
not in langdb, and inconsistencies in autonyms.
Update langdb with codes and autonyms used in translatewiki.net

Add support for language codes that are currently only supported in translatewiki.net.
There was a two year or so backlog.
Merge pull request #164 from siebrand/mw3

Update langdb with codes and autonyms used in translatewiki.net
Merge pull request #163 from siebrand/mw2

Update langdb with codes and autonyms
Add languages to langdb: Bari, Dinka, Songhay
Update langdb JSON with the latest yaml changes
Merge pull request #165 from amire80/langdbjson

Add languages to langdb: Bari, Dinka, Songhay
Fix broken tests while adding more languages

Change-Id: I8c180e96bc2fb40582e0fedfd9c8eab430961c59