Add a large profile picture to Projects

Summary: The ports over a similar "profile image" menu item to Projects. It gives us some room to use the project icon in the sidenav along with a larger photo. It also will open up some room in the sub-page headers for us to focus on that page, and not the identity of the project at hand. Expect a few more project related touch up diffs.

Test Plan:
Review new projects menu on a few projects, update the image, see new image. Great for team photos.

{F4951264}

Reviewers: epriestley, amckinley

Reviewed By: epriestley

Subscribers: Korvin

Differential Revision: https://secure.phabricator.com/D17869