title: iOS 7 navigation bar height
body: <p>Is it possible to change navigation bar height in iOS 7?</p>
  
  <p>why I need navigation bar: 
  to have a transparent navigation bar with the right positions of others elements on my view without any problems;</p>
  
  <p>I don't want to create a fake "navigation bar" - in this case I'll need to set up all positions myself.</p>