Adding awarder info to badge cards displayed on user profile pages

Summary: Ref T8940

Test Plan: Award badge, open recipient profile page, badge should appear in badges list, and flipping the badge card should show who awarded it.

Reviewers: #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: chad, Korvin

Maniphest Tasks: T8940

Differential Revision: https://secure.phabricator.com/D15570