SoEmo feedback

@drsnyder @garthwebb @armonr @jsutterfield 
Implementing the feedback from today's meeting:
- [x] Always apply the auto-orient flag
- [x] top-crop
- [x] top-crop-down
- [x] fixed-aspect-ratio

That's all I have from my notes, let me know if I missed anything. I also added the ability to add a custom path in the sandbox. Hopefully this will eliminate the url hacking you guys have been doing.