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

Testing commits to github.

db/migrate/015_add_verbose_action_descriptors_preference.rb

@@ -0,0 +1,9 @@
+class AddVerboseActionDescriptorsPreference < ActiveRecord::Migration
+  def self.up
+    add_column :preferences, :verbose_action_descriptors, :boolean, :default => false, :null => false
+  end
+
+  def self.down
+    remove_column :preferences, :verbose_action_descriptors
+  end
+end