message: remove the message which appears when I didn't anything.
diff: @@ -71,6 +71,7 @@ if (process.env.NODE_ENV === "production") {
  } else {
  seed(project, 0);
  }
  +project.setModified(false);
  function firefox57WorkaroundForBlankPanel () {
  // TODO: remove this as soon as Mozilla fixes https://bugzilla.mozilla.org/show_bug.cgi?id=1425829
  