Conpherence - workflow the Message link on people profiles

Summary: Fixes T2416. I was tired of looking at this task in the list, interns be damned. :D

Test Plan: it is now a workflow when you click it

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Maniphest Tasks: T2416

Differential Revision: https://secure.phabricator.com/D5811