Add more "disabled" UI to PHUIObjectItemView

Summary: Brings more UI tweaks to disabled objects, like projects/people. Also fixes a missing icon in projects.

Test Plan: Application search with people and projects that have disabled results.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Maniphest Tasks: T12732

Differential Revision: https://secure.phabricator.com/D17962