ga.html

<script>
  (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
  (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
  m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
  })(window,document,'script','//www.google-analytics.com/analytics.js','ga');

  {% if site.ga_tracking_code %}
    ga('create', '{{site.ga_tracking_code}}', 'auto');
  {% endif %}
  {% if site.p2pu_ga_tracking_code %}
    ga('create', '{{site.p2pu_ga_tracking_code}}', 'auto', {'name': 'p2puTracker'} );
  {% endif %}
  {% if site.ga_tracking_code %}
    ga('send', 'pageview');
  {% endif %}
  {% if site.p2pu_ga_tracking_code %}
    ga('p2puTracker.send', 'pageview');
  {% endif %}
</script>