add piwik tracking code

templates/base.mako

@@ -29,6 +29,23 @@
 ${next.body()}\
 <%block name="tail"></%block>\
 </div>
+
+<!-- Piwik -->
+<script type="text/javascript">
+  var _paq = _paq || [];
+  _paq.push(['trackPageView']);
+  _paq.push(['enableLinkTracking']);
+  (function() {
+    var u=(("https:" == document.location.protocol) ? "https" : "http") + "://piwik.kwant-project.org//";
+    _paq.push(['setTrackerUrl', u+'piwik.php']);
+    _paq.push(['setSiteId', 1]);
+    var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0]; g.type='text/javascript';
+    g.defer=true; g.async=true; g.src=u+'piwik.js'; s.parentNode.insertBefore(g,s);
+  })();
+
+</script>
+<noscript><p><img src="http://piwik.kwant-project.org/piwik.php?idsite=1" style="border:0" alt="" /></p></noscript>
+<!-- End Piwik Code: Analytics are used by us to improve the site, and not sent to anyone. -->
 </body>
 
 </html>