Move analytics into separate files

layouts/partials/paige/analytics/matomo.html

@@ -0,0 +1,16 @@
+{{ $page := . }}
+
+{{ with $page.Param "paige.analytics.matomo" }}
+    <script type="text/javascript">
+    var _paq = window._paq = window._paq || [];
+    _paq.push(['trackPageView']);
+    _paq.push(['enableLinkTracking']);
+    (function() {
+        var u="https://{{ .host_url | safeJS }}/";
+        _paq.push(['setTrackerUrl', u+'matomo.php']);
+        _paq.push(['setSiteId', '{{ .account_id | safeJS }}']);
+        var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0];
+        g.type='text/javascript'; g.async=true; g.src=u+'matomo.js'; s.parentNode.insertBefore(g,s);
+    })();
+    </script>
+{{ end }}