SSH key deletion button

templates/key/key.hamlet

@@ -12,6 +12,11 @@ $# You should have received a copy of the CC0 Public Domain Dedication along
 $# with this software. If not, see
 $# <http://creativecommons.org/publicdomain/zero/1.0/>.
 
+<p>
+  <form method=POST action=@{KeyR user tag}>
+    <input type=hidden name=_method value=DELETE>
+    <input type=submit value="Delete this key">
+
 <table>
   <tr>
     <td>Algorithm