E2e rx page revert title subtitle

So this includes two fixes. The first one, I discovered, is that you can't assign a top-level rootElement to the `element` function object, because it doesn't have `.element`, `$`, or any other element-like calls attached to it. The only reason it worked before is because element *does* have `.all` in it, so it worked fine for rxNotify. From now on, all top-level elements should just be `<html></html>`.

Also, I fixed the "default" rxPage title and subtitle methods, which I guess I didn't test correctly the first time around. I added a test for it this time.