title: Close AngularStrap popover
body: <p>When I click a button, it appears a popover which can be closed if you click the button inside the popover. However, if you click another button to open a popover, you will see two popovers at the same time and I want to keep just one. </p>
  
  <p>I have tried with the trigger 'focus', but it closes the popover if I click in the textarea inside the popover, I expected that this trigger was called when you click outside of the popover.</p>
  
  <p>Any idea for this? Can the methods $hide, $show be called from the controller?</p>