title: Reload UITableView when navigating back?
body: <p>I have a top level <code>UIViewController</code> that contains a <code>UITableView</code>.  The top level <code>UIViewController</code> instantiates a <code>NavigationController</code>, and pushes another <code>UIViewController</code> onto the <code>NavigationController</code>.  I.E. we push into a new, second view.  This second view has the usual "Back" button in the upper left hand corner to allow you to navigate back to the top level view.</p>
  
  <p>Is it possible, when navigating back to the top level view from the second view, to redraw the <code>UITableView</code> in the top level view, using data generated in the second view, by calling <code>cellForRowAtIndexPath</code> in the top level and if so, how does one do this?</p>