better show loading state when testing a policy

passbook/admin/templates/generic/form.html

@@ -19,6 +19,8 @@
       <input type="submit" class="btn btn-primary" value="{% block action %}{% endblock %}" />
     </form>
   </div>
+  {% block beneath_form %}
+  {% endblock %}
 </div>
 {% endblock %}