message: [bugfix] allow database macro to work when CSRF is diabled
diff: $("#testconn").click(function(e) {
  e.preventDefault();
  var url = "/superset/testconn";
  - var csrf_token = "{{ csrf_token() }}";
  + var csrf_token = "{{ csrf_token() if csrf_token else '' }}";
  $.ajaxSetup({
  beforeSend: function(xhr, settings) {
  