This offers a small panel with basic form buttons: Save, Close/cancel, delete.
action-form: The parent form controller variable to use in order to check if form is clean (variable)
action-close-url: A url to redirect to if user hits close (string)
action-allow-delete: True to allow delete (boolean)
on-delete: A callback function to call if user hits delete (function)
The controller allows transclude in order to present additional markup such as more buttons next to Delete.