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, chad
Reviewed By: epriestley
CC: aran, Korvin
Maniphest Tasks: T2418, T2399
Differential Revision: https://secure.phabricator.com/D4790
