when you hit the delete button, it flashes the delete button and takes
you to the `/service/../user/../delete` url. If you then click the save
button, it would make a POST to the delete URL... and delete the user.
now the page stays on the edit url, but adds a `?delete=yes` query
string. The dangerous flash banner now has an action field which
defines where the browser will make the POST to (which remains at
/delete).