Automatically rotate to best orientation for photo

[Matthew Exon]

The orientation of a photo displayed in full-screen mode should have nothing to do with the accelerometer. Photos should always be displayed with their short axis at the short axis of the phone's screen, thus maximising the viewable area. When switching between landscape and portrait photos it is easier and more natural to rotate the phone 90 degrees as if it was a paper photo rather than trying to shake the phone until its accelerometer takes the hint, and then balancing the phone so that the accelerometer never changes its mind.