add cloudflare beacon

Author: sinon

templates/index.html

@@ -1,6 +1,9 @@
 {% extends "after-dark/templates/index.html" %}
 {% block extra_head %}
 <meta name="google-site-verification" content="-ht4RJntETG9MGDTzs9S26SvB4bY0x6xZVleu7oziUs" />
+<script defer src='https://static.cloudflareinsights.com/beacon.min.js'
+  data-cf-beacon='{"token": "f35a557e365d456ea924020ba0f4ba81"}'>
+  </script>
 <meta property="og:type" content="article" />
 <meta property="og:url" content="{{config.base_url | safe}}/" />
 <meta property="og:site_name" content="{{ config.title }}" />