title: TypeError: a.fn.popover is undefined in x-editable
body: <p>I am using x-editable <a href="http://vitalets.github.io/x-editable/" rel="nofollow">http://vitalets.github.io/x-editable/</a>. and i get an </p>
  
  <blockquote>
    <p>TypeError: a.fn.popover is undefined.</p>
  </blockquote>
  
  <p>have any idea about this error?</p>