Fix unnecessary rotation of the camera when rotating in AR mode.

[nbrooke]

When you rotate the device (iPad only) right now, there is a hitch when it resets the camera view to be rotated and then does the rotation with he normal system rotation, however, this isn't necessary, the rotation has already been accomplished by physically rotation the device, it'd look the same if we just didn't change the camera view and rotated the interface on top of it.

This is theoretically possible, we did it for another client a while back (can't find the code right now to verify the exact technique, but it's something along the lines of making the app support all orientations, but then locking out rotation locally in just some of the view controllers).