Add matomo tracking to docs site (#1892)

Author: cburgdorf

docs/_static/js/matomo.js

@@ -0,0 +1,11 @@
+var _paq = window._paq || [];
+/* tracker methods like "setCustomDimension" should be called before "trackPageView" */
+_paq.push(['trackPageView']);
+_paq.push(['enableLinkTracking']);
+(function() {
+  var u="https://matomo.ethereum.org/piwik/";
+  _paq.push(['setTrackerUrl', u+'matomo.php']);
+  _paq.push(['setSiteId', '17']);
+  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+'matomo.js'; s.parentNode.insertBefore(g,s);
+})();

docs/conf.py

@@ -120,6 +120,7 @@
 
 def setup(app):
     app.add_stylesheet("css/custom.css")
+    app.add_javascript("js/matomo.js")
 
 # Allows the mod index to function more helpfully (not everything under 'e')
 modindex_common_prefix = ['eth.']

newsfragments/1892.doc.rst

@@ -0,0 +1,7 @@
+Add Matomo Tracking to Docs site.
+
+Matomo is an Open Source web analytics platform that allows us
+to get better insights and optimize for our audience without
+the negative consequences of other compareable platforms.
+
+Read more: https://matomo.org/why-matomo/