added a iscrollScrolling mixin that can be added to PageView.
The mixin adds the features of the jquery.iscroll plugin (eliminating the need for the plugin)
Added position:relative on the data-role=content tag so that iscroll scrollbar doesnt extend beyond the wrapper.
Modified MarionetteExt to fire show() at proper time (after pageshow). Later changed that to pagechange. Make this clean.
Modified MarionetteExt to fire scrolling using iscroll if mixin is enabled on the page.
Now, all you need to do is add the mixin to a PageView subclass and you should be done by default.
TODO: Cleanup, add logging and verify if all events are fired properly and cleaned up properly