title: UINavigationBar inside UITableViewController
body: <p>I have some static cells that I want to display, so I have a UITableViewController. There is also a NavigationBar in this scene that contains some buttons at the top. The setup looks like this:</p>
  
  <p><img src="https://i.stack.imgur.com/2OR5H.png" alt="UITableViewController setup"></p>
  
  <p>If I had a UIViewController that contained a UITableView in it, the setup would look like:</p>
  
  <p><img src="https://i.stack.imgur.com/D27Q2.png" alt="UIViewController setup"></p>
  
  <p>So, the question is:</p>
  
  <ul>
  <li>Why does the Navigation Bar have to be embedded inside the UITableView when using a UITableViewController? (I have tried putting it elsewhere but IB won't let me)</li>
  <li>I know that UITableView is a subclass of UIView, but is it OK that the top level element in the hierarchy is not a View (but a TableView)?</li>
  </ul>
  
  <p>Thanks.</p>