.
devise.ja.yml: Got from https://gist.githubusercontent.com/alfa-jpn/7704143/raw/c50424f2241848e240a72d119a962cbe91b2f69b/devise.ja.yml
Setting for Japanese.
Got from github:svenfuchs/rails-i18n/master/rails/locale/
Support i18n.
Suppress warings around sass.