A few new features, some small fixes.

ELCAssetTablePicker now works well with iPad and with orientation changes. Also has new features to let you force single-selection, force automatic modal session ending after selection, and force the image scrollview to start at the bottom (where the newest images are). The demo controller includes a new sample for using these things directly with the TablePicker, skipping the album picker entirely (which of course only works if you hard-code an album, as I've done in the demo controller).

I also made some true protocols around some ad-hoc method naming conventions, and cleaned up a small bug or two.