Summary: Ref T8996, Convert badge recipients from Edges to actual BadgeAward objects
Test Plan: Create badge, award it to recipient. Make sure adding/removing recipients works. (Still need to migrate exisiting recipients to new table and need to create activity feed blurbs)
Reviewers: epriestley, #blessed_reviewers
Reviewed By: epriestley, #blessed_reviewers
Subscribers: chad, Korvin
Maniphest Tasks: T8996
Differential Revision: https://secure.phabricator.com/D15014
