ios scrolling

Moved everything into an internal <div> so that apple's "touch" scrolling can be enabled.

Seems to be working fine so far. Had to refactor some of your tests because they modified the body directly, but it should be good now.

In the ios simulator an anchor scroll test seems to fail, but that's fairly minimal as far as I'm concerned.

I've found that scrolling inside EE is rather... unreliable in the simulator. Oddly, it always works as expected in my barebones test of an iframe with the right stuff in it. Not sure what's up with that. If you have an iPad/iPhone I'd love to get your feedback on if the scrolling is now working on an actual device.

Consider this a "progress check-in", there's obviously more work to do.