R1:22d12fe499e3

Mark 'closed' as translatable

Summary:
This is to allow conservative people to bring back the old manners.

NOTE: It doesn't mark all occurrences but I think that's good enough. We will eventually mark them all.

Test Plan: Translated 'closed', displayed closed revision.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin, asukhachev

Maniphest Tasks: T1139

Differential Revision: https://secure.phabricator.com/D2760