moment/moment — pull request #1556 by 1ec5 (2014-03-27 09:29:21+00:00)
Title: Vietnamese is vi, not vn

MediaWiki is using this library, but it also uses the standard ISO 639 code for Vietnamese (`vi`), so it doesn’t pick up this localization when the interface language is set to Vietnamese. (`vn` is the ISO country code for Vietnam.)