Multiple forms on one page

Ultraform should now be able to determine what form is being sent on pages with more then one form.

Element objects now have a `$name` and a `$uniquename`. The uniquename is what is used in templates, the `$name` is what is used in the library itself as a identified. When the client sends back a POST request Ultraform will first determine if it is for that instance of Ultraform. and if it is rewrite the uniquenames back to normal names for processing.

Thing to think of in the future is if we want to set the name on runtime that Ultraform also updates the `$uniquename` when rendering.

Removed index.php from config.php to clean up URLs.