Rails 4! Ruby 2.0!

* Added shims for deprecated sass helpers (like `border-radius`)
* Added `protected_attributes` gem for Rails 3 style param security till we migrate.
* Upgraded Tire to support Rails 4's `ActiveModel::Name` change.
* Use a Rails 4-supporting fork of SWFObject
* Use `asset_path` instead of `image_tag` in ERB'd sass/coffee files, as the latter seems to be deprecated.
* Update routes syntax (`match` is no longer supported without `via:[*methods]`)
* Removed configuration options no longer supported in Rails 4 (`whiny_nils`, `auto_explain_threshold`)
* Use modern hash syntax in `schema.rb`

**TODO**
* [ ] Move to new param protection
* [ ] Remove references to deprecated vendor-prefix mixins (`border-radius`, `text-shadow`)
* [ ] Apologize to @nixme for my Gemfile.lock mutilation