title: Size text to fit on navigationItem.backBarButtonItem.title?
body: <p>I have a UIViewController with title "La Bolsa al minuto". When I push to another VC, I can see the back button with text "&lt; Back". This is the code:</p>
  
  <pre><code>self.title = @"La Bolsa al minuto";
  [self.navigationController pushViewController:detail animated:YES];
  </code></pre>
  
  <p>If I shorten the title (one letter is enough), the back button item displays "&lt; La Bolsa al minut".</p>
  
  <pre><code>self.title = @"La Bolsa al minut";
  [self.navigationController pushViewController:detail animated:YES];
  </code></pre>
  
  <p>Is there any way to reduce that title size to let me display the full title?</p>