Add a Page Navigation Brick

STR
* Add the Page Navigation brick
* Create an app that has a couple of pages
* Link a button to the Page Navigation brick and
  * Try to navigate to a specific page by sending the Page Navigation a number
  * Try to navigate to a previously open page by sending the Page Navigation a signal on it's "Previous Page" listener

Please let me know if STR too vague or having trouble, thanks.
don't think you need this if all it does is this.super(), not 100% sure