base__test_8html_source.html

<!DOCTYPE HTML>

<html>

  <head>

    <meta charset="utf-8" />

    <meta http-equiv="X-UA-Compatible" content="IE=edge">

    {% block title %}{% endblock %}

  </head>


  <body>

    {% block body %}{% endblock %}

    <script type="text/javascript">

  //Removing  leaving page alert

  window.onbeforeunload = null;

 </script>

  </body>

</html>