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

Testing commits to github.

db/migrate/006_add_preferences_to_user_table.rb

@@ -0,0 +1,17 @@
+class AddPreferencesToUserTable < ActiveRecord::Migration
+  
+  class User < ActiveRecord::Base; end
+  
+  def self.up
+    add_column :users, :preferences, :text
+    @users = User.find(:all)
+    @users.each do |u|
+      u.preferences = { "date_format" => "%d/%m/%Y", "week_starts" => "1", "no_completed" => "5", "staleness_starts" => "7", "due_style" => "1", "admin_email" => "butshesagirl@rousette.org.uk"}
+      u.save
+    end
+  end
+
+  def self.down
+    remove_column :users, :preferences
+  end
+end