Sample update

Reworked the sample server and page.

* The AppId and AppKey are now only on the server side.
* Don't use templating (mu2) to reduce coupling between the two (is now more of a client-side app).
* Similarly, remove using sessions. Isn't needed outside of skews for a simple application.
* It clutters the HTML a bit, but used bootstrap for pretties

![sample](https://cloud.githubusercontent.com/assets/1127384/2697248/14062ee0-c3ec-11e3-9415-0f6032710073.png)