Improve accept button in privacy policy

conf/templates/privacy_policy/en/1.0.html

@@ -142,7 +142,15 @@
         Please review the <a href="https://matrix.org/legal/terms-and-conditions/" target="_blank">terms and conditions</a> before using this Service.
     </p>
 
+    {% if has_consented %}
+      <hr>
+      <p>
+        Note: You have already accepted the privacy policy.
+      </p>
+
+    {% else %}
       {% if not public_version %}
+        <hr>
         <!-- The variables used here are only provided when the 'u' param is given to the homeserver -->
         <form method="post" action="consent">
           <input type="hidden" name="v" value="{{version}}"/>
@@ -151,6 +159,7 @@
           <input type="submit" value="Accept"/>
         </form>
       {% endif %}
+    {% endif %}
 
 
   </body>