The Dirty dialogs have been combined into IPA.dirty_dialog. It provides the Update and Reset buttons with customizable callback. Previously the widget's dirty status is computed by comparing the old values with the new values. This method is sometimes inaccurate, so the is_dirty() method has been modified to simply return a flag which is set to true if the widget is changed. Ticket #896.
http://www.freeipa.org/page/UI_Unit_Tests