R1:0cc0782eaf8d

Completely remove Pholio right gutter

Summary:
- Moves the right-hand gutter under the image.
- Moves size information to the upper right.
- This is transitional, on the way toward something more like the mocks in D9534.

Test Plan: See screenshot.

Reviewers: chad

Reviewed By: chad

Subscribers: epriestley

Differential Revision: https://secure.phabricator.com/D9538