message: Fix runtime error visiting create page directly
  If you directly hit one of the `/new` URLs, the app will white screen
  since discovery hasn't completed. Make sure the model is loaded before
  trying to show the resource sidebar.
diff: @@ -39,6 +39,10 @@ export class ResourceSidebarWrapper extends React.Component {
  export const ResourceSidebar = props => {
  const {kindObj, height} = props;
  + if (!kindObj) {
  + return null;
  + }
  +
  const {kind, label} = kindObj;
  let SidebarComponent = resourceSidebars.get(kind);
  if (SidebarComponent) {
  