Scrolling scrolling everywhere but not a drop to scroll

So this splits scrolling into those-who-can-css and those-who-must-iScroll

those-who-must-iScroll must also be limited in how many file / folder items we can load for now. Pagination of some kind (load more...) to come when we can.

There is some commented out stuff to do some changes to what those-who-must-iScroll see in a file item to try and make it possible to up the number of items they can see, but it needs some more time spent on it and needs approval from mike/matt/ethan/etc... since it changes the UI for some clients.