R1:831590410a89

Make Conpherence loading an opacity change.

Summary: Fixes T3295

Test Plan: Tested loading new messages, pontificating.

Reviewers: epriestley, btrahan

Reviewed By: btrahan

CC: aran, Korvin

Maniphest Tasks: T3295

Differential Revision: https://secure.phabricator.com/D6097