tracker summary: update permissions notice

ref ~sircmpwn/todo.sr.ht#227

todosrht/templates/tracker.html

@@ -158,8 +158,12 @@
       {% endif %}
       {% else %}
       <hr />
+      {% if current_user %}
+      <p>You are not permitted to submit tickets for this tracker.</p>
+      {% else %}
       <p>You need to <a href="{{ oauth_url }}">log in</a> to submit tickets.</p>
       {% endif %}
+      {% endif %}
     </div>
     <div class="col-md-12 col-lg-8">
       {% if tracker.import_in_progress %}