title: How to set the font size of navigation bar title
body: <p>I try to set the fontsize of my navigation title and other items.
  How can I do this ?</p>
  
  <p>There are a lot of answers mentoining that we just can set this with the method uinavigationbar.setTitleTextAttributes, but this method doesn't exist (anymore)</p>
  
  <p>Does someone know how to do ?</p>
  
  <pre><code>navigationBar = UINavigationBar(frame: CGRectMake(0, 0, fDialogWidth, navbarHeigth))
          let navigationItem = UINavigationItem()
          navigationItem.title = sTitle;
          // Create left and right button for navigation item
          let leftButton = UIBarButtonItem(title: sBacklabel, style: UIBarButtonItemStyle.Plain, target: self, action: "backAction:")
          let rightButton = UIBarButtonItem(title: saddBookmark, style: UIBarButtonItemStyle.Plain, target: self, action: "addBookmarkAction:")
  
  
  
          // Create two buttons for the navigation item
          navigationItem.leftBarButtonItem = leftButton
          navigationItem.rightBarButtonItem = rightButton
          navigationBar.items = [navigationItem];
  
          navigationBar.frame = CGRectMake(0, 0, screenwidth, navbarHeigth);
  </code></pre>