title: Actionbar progress indicator and refresh button
body: <p>Is it possible to show the progress indicator (the one that is show using requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS) in place of a refresh button?</p>
  
  <p>The idea is to work as Gmail client does: When not loading show refresh button and when loading show the indeterminate spinner in the place of refresh button</p>