Add Matomo to website and docs
diff --git a/documentation/website/siteConfig.js b/documentation/website/siteConfig.js
index cdb2454..2739de8 100644
--- a/documentation/website/siteConfig.js
+++ b/documentation/website/siteConfig.js
@@ -62,12 +62,15 @@
         theme: 'atom-one-dark',
     },
 
-    scripts: ['/docs/js/jquery-3.3.1.min.js',
+    scripts: [
+        '/docs/js/matomo.js',
+        '/docs/js/jquery-3.3.1.min.js',
         '/docs/js/buttons.js',
         '/docs/js/slick.min.js',
         '/docs/js/custom.js',
         '/docs/js/clipboard.min.js',
-        '/docs/js/code-block-buttons.js'],
+        '/docs/js/code-block-buttons.js'
+    ],
     stylesheets: [
         '/docs/css/slick.min.css',
         '/docs/css/slick-theme.min.css',
diff --git a/documentation/website/static/js/matomo.js b/documentation/website/static/js/matomo.js
new file mode 100644
index 0000000..807ba2d
--- /dev/null
+++ b/documentation/website/static/js/matomo.js
@@ -0,0 +1,32 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+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', '35']);
+  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);
+})();
diff --git a/website/partials/_meta.ejs b/website/partials/_meta.ejs
index a2428c3..50fa745 100644
--- a/website/partials/_meta.ejs
+++ b/website/partials/_meta.ejs
@@ -19,4 +19,19 @@
 <link rel="stylesheet" href="/css/fonts.css">
 <link href="/css/responsive.css" rel="stylesheet">
 
+<script>
+      var _paq = window._paq = window._paq || [];
+      _paq.push(['disableCookies']);
+      _paq.push(['trackPageView']);
+      _paq.push(['enableLinkTracking']);
+      (function() {
+        var u="//analytics.apache.org/";
+        _paq.push(['setTrackerUrl', u+'matomo.php']);
+        _paq.push(['setSiteId', '35']);
+        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>
+
+
 <title>Apache StreamPipes - <%= title %></title>