Previous/next should return false on href tags

[JoshuaNovak919]

If you click the next or previous button it actually changes the page, even in the demo on this page:

http://vadimg.com/twitter-bootstrap-wizard-example/examples/basic-progressbar.html

After clicking next or previous you will see the hash tag.

[JoshuaNovak919]

You can get it to work properly if you add:

e.preventDefault();

to

this.next = function(e) {

and

this.previous = function(e) {