ensure anonymous before changing registration

templates/person.html

@@ -37,7 +37,13 @@
 </table>
 <h3>Surveys done</h3>
 Wallets and surveys mentioning <a href="/wallets/person/{{person}}">{{person.fullname|safe}}</a><br>
-
+{% if person.user %}
+This person has a 'troggle user' logon '{{person.user}}' and a registered email address. <br />
+<a href="/accounts/register/{{person.slug}}">RE-REGISTER</a> but only after logging-on as '{{person.user}}'
+{% else %}
+<a href="/accounts/register/{{person.slug}}">REGISTER</a> as a troggle user
+{% endif %}
+<br />
 {% if person.blurb %}
 {{person.blurb|safe}}
 {% else %}