Update to rails 3.1.0

* Bump rails version to 3.1.0 in Gemfile
* Update config files
* Fix bcrypt monkey patch for specs
* Fix TracksController
* Replace track streaming with track download
* Remove assets from application layout

config/routes.rb

@@ -4,8 +4,9 @@ Scube::Application.routes.draw do
   resources :sessions, :only => [:new, :create]
 
   resources :tracks do
-    get 'stream', :on => :member
+    get 'download', :on => :member
   end
+
   resources :playlists
 
   root :to => 'home#index'