Summary:
Fix T11339.
Now, old and new are both simple lists of phids, and the rendering should make sense.
Test Plan: Viewed existing transaction with all 3 states.
Reviewers: epriestley, #blessed_reviewers
Reviewed By: epriestley, #blessed_reviewers
Subscribers: Korvin
Maniphest Tasks: T11339
Differential Revision: https://secure.phabricator.com/D16311
