Removed superfluous 'tracks' directory at the root of the repository.

Testing commits to github.

db/migrate/009_add_user_pref_refresh.rb

@@ -0,0 +1,15 @@
+class AddUserPrefRefresh < ActiveRecord::Migration
+  
+  class User < ActiveRecord::Base; serialize :preferences; end
+  
+  def self.up
+    @users = User.find(:all)
+    @users.each do |user|
+      user.preferences.merge!({"refresh" => "0"})
+      user.save
+    end
+  end
+
+  def self.down
+  end
+end