Upgrading the Blueprint website to Rails 4.0.0

Changes:

* Upgraded the app with associated gems to Rails 4.0.0 and Ruby 2.0.0
* Removed assets from the public folder -- now compiled when we deploy.
* Split seeds files into development/test/production
* Tabs -> Spaces wherever I saw it.
* Changed attr_accessible -> private method for safe_params (part of rails 4 upgrade)
* Fixed some issues with assets not loading correctly.

I have not tested any admin features so before you merge this in, we shold test that I didn't break anything. There is a staged version located here: http://blueprint-stage.herokuapp.com/