R1:1457797c4a97

Move PhamePost to new phid stuff

Summary: Ref T2715

Test Plan: phid.query and a brief phame post read

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Maniphest Tasks: T2715

Differential Revision: https://secure.phabricator.com/D6579