title: Ionic: Preserve $scope when navigate to another view
body: <p>I'm developing an app using Ionic Framework (Angular+Cordova).</p>
  
  <p>The app have a News section with a list of news loaded from a server in JSON, then I tap in a new to open the Single New's View, but when go back to the list of news, $scope has been cleared and must get again the news list from the server.</p>
  
  <p>Is this the usual behavior or am I doing something wrong?</p>
  
  <p>How could I prevent this behavior?</p>
  
  <p>Thanks!</p>