Fix #925: clear cookie when new anonymous poll.

meetingpoll/views.py

@@ -29,6 +29,7 @@ def new(request):
             return HttpResponseRedirect(reverse('choices', args=(str(poll.id),)))
     else:
         if request.user.is_anonymous():
+            request.session.clear()
             messages.warning(request, _('You are not logged so you will not be able to modify your poll after creation or recieve notifications.'))
         form = PollForm()
     return render_to_response(