Convert "profile" image transforms to the new pathway
Summary:
Ref T7707. This ends up being sort of complicated: to support 100x100 images in T4406, we need to scale small images up so they look OK when we scale them back down with background-size in CSS.
The rest of it is mostly straightforward.
Test Plan:
- Did an OAuth handshake and saw a scaled-up, scaled-down profile picture that looked correct.
- Used Pholio, edited pholio, embedded pholio.
- Uploaded a bunch of small/weird/big images and regenerated all their transforms.
- Uploaded some text files into Pholio.
- Grepped for removed methods, etc.
Reviewers: chad, btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T7707
Differential Revision: https://secure.phabricator.com/D12818
