Revert "Merge branch 'translation_refactoring' of git://github.com/kelvi...

...nst/railsinstaller.org into kelvinst-translation_refactoring"

This reverts commit 07f00c73c4752e02f01ad21554e1cd4ad87dab9b, reversing
changes made to 7b8c281bd3531f9a5ede63f476d39221fc0e354e.

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After deploying to production, this seems to break when a locale is not supplied. It works fine when using `?locale=pt-BR` but still shows the `pt-BR` translation when using `?locale=en` or `?locale=en-US`

Need to look into what is causing this behavior.