Add setDisabled to pinboard view

Summary: Adds setDisabled state to PHUIPinboardItemView, implements in Pholio, Macro

Test Plan:
Pholio, Macro, disabled and closed items.

Reviewers: lpriestley, epriestley

Reviewed By: epriestley

Subscribers: epriestley, Korvin

Maniphest Tasks: T5074

Differential Revision: https://secure.phabricator.com/D9514