R1:f1552f54a056

Link Timeline image to profile

Summary: Ref T9336. Links the timeline photo to user profile. Presume this always exists?

Test Plan: Review a few timelines, click on heads.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Maniphest Tasks: T9336

Differential Revision: https://secure.phabricator.com/D14283