title: React Admin - Create and edit in modal
body: <p>Following the discussion in <a href="https://github.com/marmelab/react-admin/issues/850" rel="noreferrer">https://github.com/marmelab/react-admin/issues/850</a>, did someone manage to make a create / edit form into a modal?</p>
  
  <p>Thanks,</p>
  
  <p>Nicolas</p>