title: navigation bar in Detail side of master-detail controller missing
body: <p>I made masterdetailview with different <code>viewcontrollers</code> in my <code>storyboard</code> and linked every one with push <code>segue</code>. Now when I click on list item new <code>DetailViewController</code> opens, but every single one have no <code>navigationbar</code>. I added <code>navigation item</code> on top off every View, added title for every single one, but after all that <code>navigation bar</code> is not showing. I am working on <code>iPad</code> app and in both orientations navigation bar is missing.</p>
  
  <p><strong>EDIT:</strong></p>
  
  <p>My appDelegate is same as template when you create your Master-Detail project:</p>
  
  <pre><code>- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
  {
      // Override point for customization after application launch.
      if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPad) {
          UISplitViewController *splitViewController = (UISplitViewController *)self.window.rootViewController;
          UINavigationController *navigationController = [splitViewController.viewControllers lastObject];
          splitViewController.delegate = (id)navigationController.topViewController;
      }
  
      return YES;
  }
  </code></pre>
  
  <p>One of my DetailViewControllers:</p>
  
  <pre><code>#import "MediaExpDetailViewController.h"
  
  @interface MediaExpDetailViewController ()
  @property (strong, nonatomic) UIPopoverController *masterPopoverController;
  @end
  
  @implementation MediaExpDetailViewController
  
  #pragma mark - Managing the detail item
  
  - (void)setDetailItem:(id)newDetailItem
  {
      if (_detailItem != newDetailItem) {
          _detailItem = newDetailItem;
      }
      if (self.masterPopoverController != nil) {
          [self.masterPopoverController dismissPopoverAnimated:YES];
      }
  }
  
  
  - (void)viewDidLoad{
  
      [super viewDidLoad];
  }
  
  #pragma mark - Split view
  
  - (void)splitViewController:(UISplitViewController *)splitController willHideViewController:(UIViewController *)viewController withBarButtonItem:(UIBarButtonItem *)barButtonItem forPopoverController:(UIPopoverController *)popoverController
  {
      barButtonItem.title = NSLocalizedString(@"MasterButton", @"Master");
      [self.navigationItem setLeftBarButtonItem:barButtonItem animated:YES];
      self.masterPopoverController = popoverController;
  }
  
  - (void)splitViewController:(UISplitViewController *)splitController willShowViewController:(UIViewController *)viewController invalidatingBarButtonItem:(UIBarButtonItem *)barButtonItem
  {
      // Called when the view is shown again in the split view, invalidating the button and popover controller.
      [self.navigationItem setLeftBarButtonItem:nil animated:YES];
      self.masterPopoverController = nil;
  }
  
  
  @end
  </code></pre>