R1:5a33a6743e92

Always show a menu on durable column

Summary: If you don't have any rooms, we currently show no menu and users have no logical means of closing the column. This lets "Hide Column" at least still appear. Fixes T9195

Test Plan: Fresh install, hit {key \}, see menu. Close Column.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Maniphest Tasks: T9195

Differential Revision: https://secure.phabricator.com/D16516