R1:1cde41b9946c

Conpherence - add crop

Summary:
mainly, this adds the image cropper - yay!

- also removes the file image from the handle stuff I added in V1. now we do all this crazy photo stuff.

Test Plan:
- uploaded a photo by dragging to header and noted 120 x 80 showed up on reload
- uploaded a photo by dragging to edit dialogue spot and noted 120 x 80 showed up on reload
- cropped a photo - noted it cropped right
- cropped a photo again and again and again - seems like it crops okay

Reviewers: epriestley…