title: React router modal-only routes
body: <p>I do have a public and a private area in my app and i want to be able to show the login modal dialog everywhere in the public view. The modal should have its own route. A second use case would be a profile modal in the private area. </p>
  
  <p>The problem is that the current view in the background would disappear when the modal is shown because the modal is not a child of the current views route.  </p>
  
  <p>Since i do not want to add the same modal to every possible view route, here is the question: Is it possible to decouple modal routes from its parent routes and show them everywhere in the app without the main content rendering? What is the best approach for this? I've found <a href="https://github.com/rackt/react-router/issues/860">this issue</a> but is seems not to be the same problem.</p>
  
  <p>A browser refresh on the modal route would render nothing in the background but that is a problem i could live with.</p>