Adds "sorted" scope to Principal and User and sort users/groups properly.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@11259 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/user.rb

@@ -114,6 +114,7 @@ class User < Principal
     group_id = group.is_a?(Group) ? group.id : group.to_i
     where("#{User.table_name}.id NOT IN (SELECT gu.user_id FROM #{table_name_prefix}groups_users#{table_name_suffix} gu WHERE gu.group_id = ?)", group_id)
   }
+  scope :sorted, lambda { order(*User.fields_for_order_statement)}
 
   def set_mail_notification
     self.mail_notification = Setting.default_notification_option if self.mail_notification.blank?