Add piwik tracking code

Author: Bjwebb

docs/_templates/layout.html

@@ -2,3 +2,20 @@
 
 {% set css_files = css_files + ["_static/basic.css"] %}
 
+{% block footer %}
+<!-- Piwik -->
+<script type="text/javascript">
+  var _paq = _paq || [];
+  /* tracker methods like "setCustomDimension" should be called before "trackPageView" */
+  _paq.push(['trackPageView']);
+  _paq.push(['enableLinkTracking']);
+  (function() {
+    var u="//mon.opendataservices.coop/piwik/";
+    _paq.push(['setTrackerUrl', u+'piwik.php']);
+    _paq.push(['setSiteId', '12']);
+    var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0];
+    g.type='text/javascript'; g.async=true; g.defer=true; g.src=u+'piwik.js'; s.parentNode.insertBefore(g,s);
+  })();
+</script>
+<!-- End Piwik Code -->
+{% endblock %}