title: Swift how to preserve navigation bar button items after push
body: <p>In my root view controller I set an array of bar button items with images and assign them to the right bar button.</p>
  
  <p>When I push the next view controller my navigation bar resets and only displays a back button. </p>
  
  <p>Any way to preserve the navigation bar as it was set on the root view controller so it will display on all pages?</p>