HDDS-7671. Embed Matomo Web Analytics tracking code to website (#31)

diff --git a/layouts/partials/header.html b/layouts/partials/header.html
index 4458d64..42935c4 100644
--- a/layouts/partials/header.html
+++ b/layouts/partials/header.html
@@ -33,6 +33,28 @@
           integrity="sha384-1q8mTJOASx8j1Au+a5WDVnPi2lkFfwwEAa8hDDdjZlpLegxhjVME1fgjWPGmkzs7" crossorigin="anonymous">
     <link rel="stylesheet" href="style.css">
 
+    <!-- Matomo -->
+    <script>
+      var _paq = window._paq = window._paq || [];
+      /* tracker methods like "setCustomDimension" should be called before
+"trackPageView" */
+      /* We explicitly disable cookie tracking to avoid privacy issues */
+      _paq.push(['disableCookies']);
+      /* Measure a visit to flink.apache.org and nightlies.apache.org/flink
+as the same visit */
+      _paq.push(['trackPageView']);
+      _paq.push(['enableLinkTracking']);
+      (function() {
+        var u="//analytics.apache.org/";
+        _paq.push(['setTrackerUrl', u+'matomo.php']);
+        _paq.push(['setSiteId', '34']);
+        var d=document, g=d.createElement('script'),
+s=d.getElementsByTagName('script')[0];
+        g.async=true; g.src=u+'matomo.js'; s.parentNode.insertBefore(g,s);
+      })();
+    </script>
+    <!-- End Matomo Code -->
+
 </head>
 
 <body>