Pholio inline comment now include a thumbnail and link

Summary: Pholio inline comment now include a thumbnail and link to the Image being commented on

Test Plan: {F36331}

Reviewers: chad, epriestley

Reviewed By: epriestley

CC: aran, Korvin, btrahan

Maniphest Tasks: T2709

Differential Revision: https://secure.phabricator.com/D5375