R1:094c79d6e234

Make reject, accept outline icons

Summary: These are a little easier on the eyes.

Test Plan:
Reject an epriestley diff.

{F146851}

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: epriestley, Korvin

Differential Revision: https://secure.phabricator.com/D8841