R1:b925fc884afb

Change closed tasks to view as disabled

Summary: This cleans up the UI of closed tasks in Maniphest task view, removes the Foot and sets view to disabled.

Test Plan: Searched for all tasks

Reviewers: epriestley

Reviewed By: epriestley

CC: Korvin, epriestley, aran

Differential Revision: https://secure.phabricator.com/D7712