Change STOP to DESTROY and add SUSPEND

"STOP" was misleading because the link actually destroyed the application. Rename the action to "DESTROY" to be less ambiguous.

Add a "SUSPEND" link, which scales an application to zero instances in one click.

* Remove source maps from JS files since they don't exist and are not desirable
* HTML5-ify index.html by removing self-closing end tags and "type" where not needed