Handle iPhone rotation

[jywarren]

Adjust UI and canvas size when a mobile device like the iPhone rotates.
Some old code from Events.js:

//if (Prototype.Browser.MobileSafari) {
// addEventListener("load", function() { setTimeout(updateLayout,
0) }, false)
// var currentWidth = 0;
// function updateLayout() {
// if (window.innerWidth != currentWidth) {
// currentWidth = window.innerWidth;
// var orient = currentWidth == 320 ? "profile" :
"landscape";
// document.body.setAttribute("orient", orient);
// setTimeout(function() {
// window.scrollTo(0, 1);
// }, 100);
// }
// }
// setInterval(updateLayout, 400);
//}