Add mastodon verification

Author: jotak

templates/layouts/roq-default/main.html

@@ -17,9 +17,12 @@
 <p>{site.description}</p>
 {/}
 
+<!-- Mastodon verification -->
+
 {#footer}
 <footer>
   {#include partials/roq-default/sidebar-contact /}
+  <a rel="me" href="https://hachyderm.io/@netobserv" style="visibility: hidden">Mastodon</a>
   <section class="support">
     <p><b>To support us, give us some stars:</b></p>
     <!-- Place this tag where you want the button to render. -->