Adds a first pass at the faux-stacked-bar.js file, which would create a ...

...stacked bar graph were every data point is represented by a rect, creating the illusion of a true stacked bar graph.

This is not actually a real pull request, I just wanted a place where we could comment on things.
I wonder if there would be a way to do this in a more general way, like add this to the super class, then pass in a controlClickHandler which would get called with an element, on `this`. Then the binding would be abstracted. Probably too complicated to be worth doing here.