title: Tab Bar Controller - how to reselect a selected tab
body: <p>I started with the default Tabbed Application, added some tabs in the Storyboards with their own viewcontrollers, how can I know when a tab that's already selected, get's touched again?</p>
  
  <p>Tab 1 goes to a webview that has loaded other pages, when the user hits the home tab again, when it's still highlighted, I'd like to reload the initial url where it started.</p>
  
  <p>Thanks for any ideas!</p>