Add piwik support

layouts/partials/js.html

@@ -2,3 +2,21 @@
 <script src="{{ $.Site.BaseURL }}{{ . }}"></script>
 {{ end }}
 
+{{ with .Site.Params.Piwik }}
+<!-- Piwik -->
+<script type="text/javascript">
+    var _paq = _paq || [];
+    _paq.push(["setDoNotTrack", true]);
+    _paq.push(['trackPageView']);
+    _paq.push(['enableLinkTracking']);
+    (function() {
+        var u="https://{{ .siteurl }}/";
+        _paq.push(['setTrackerUrl', u+'piwik.php']);
+        _paq.push(['setSiteId', '{{ .id }}']);
+        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>
+<noscript><p><img src="https://{{ .siteurl }}/piwik.php?idsite={{ .id }}&rec=1" style="border:0;" alt="" /></p></noscript>
+<!-- End Piwik Code -->
+{{ end }}