added page ownership verification for google searches

Author: f-wilsch

_config.yml

@@ -2,7 +2,7 @@ title: HighPT
 logo: /assets/img/HighPT.png
 description: A Tool for high-$p_T$ Drell-Yan Tails Beyond the Standard Model.
 show_downloads: false
-google_analytics: false
+google_verification: <meta name="google-site-verification" content="CTamL9_6HI4D1MV3hCzDgJJcd5DMWicvZLbkVFjLZvs" />
 color-scheme: auto
 blank_title: true
 favicon: true

_includes/head-custom.html

@@ -32,4 +32,10 @@
   </script>
 {% endif %}
 
+<!-- google_verification -->
+{% if site.google_verification %}
+  {{site.google_verification}}
+{% endif %}
+
+
 <!-- end custom head snippets -->