svenfuchs/rails-i18n — pull request #260 by tigrish (2012-09-17 23:49:50+00:00)
Title: Make language codes ISO 639-1 compliant

The i18n-spec gem now tests for this so ISO 639-2 languages have been moved
into their own directory. I think this is OK since these languages seem to
generally be less popular (not trying to troll, seriously!).

Also removed the language codes from locales where it was possible. This is
so that there is the biggest chance of a match when using locale fallbacks
(eg making it possible to fallback from :sv-SE to :sv).