R1:8f94aa8a0647

Update Diffusion UI

Summary: This updates (all?) of Diffusion/Audit to new UI, included edit and other extra form pages. It's fairly complete but I don't know all the nooks and crannies so to speak to fully verify I didn't mess anything up.

Test Plan: Tested creating new repositories, browsing, searching, auditing. Need more eyes.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Differential Revision: https://secure.phabricator.com/D15487