title: how to dismissModalViewController by clicking tabBarItem
body: <p>When i didSelectRowAtIndexPath in my tableView, my DetailView is loaded. In detailView i can return to the tableView with a backButton, which dismisses the detailview.</p>
  
  <p>In My app i have in front a tabBar (tabbarcontroller), everytime. When the detailView is loaded and in case of the backbutton is clicked a tabBarItem, <strong>the detailViewController is not dismissed</strong>.<br>
  <em>That means, that i cant load the detailView again, if i didSelectRowAtIndexPath.</em></p>
  
  <p>Can someone help my out with this problem?</p>
  
  <p>Thanks,<br>
  brush51</p>