The app has to provide a webhook URL to be notified when the app is
disconnected. Once we have better token management, we would have a
unique token per app and could revoke it. But for now it's just a
request to disconnect the app.
I would have like to use a standard form to submit to the reflex but the
whole enterprise settings tab is in a form already and HTML doesn't
allow nested forms. While it does still work in browsers, it would have
added much more HTML to set up a form with a hidden input field instead
of just one additional data attribute.
The whole page is rendered by the controller again but the reflex root
attribute ensures that only parts of this tab are replaced. Otherwise
unsaved data on other tabs could be replaced and the page actually
becomes blank because AngularJS doesn't play well with the morph.
