Rails 4 update: simple form and rails i18n upgraded too. A lot of configs updated. One failing feature.
Test fixed.
Additional file edits to use Rails 4 style.
Capistrano updated. It should support rails 4 now.
bin direcory generated with `rake rails:update:bin` and application.js changed a liitle bit.
Application will raise an error if an invalid locale is passed (deprecation error's fix).
Merge branch 'rails4'