title: ui.bootstrap.datepicker is-open not working in modal
body: <p>I´m using the Bootstrap UI datepicker directive and I´m trying to have an datepicker button that opens the datepicker popup like in the original example but it does not work in a modal window.</p>
  
  <p>See <a href="http://plnkr.co/edit/7zUHqAvx5P9RR86gDi2f?p=preview">PLUNKER</a></p>
  
  <p>What am I doing wrong?</p>