Summary: Implements T8734
Test Plan: Verify that countdowns can have spaces associated with them. Verify that non-default spaces are displayed in the header of the countdowns in the result of the query.
Reviewers: lpriestley, epriestley, #blessed_reviewers
Reviewed By: epriestley, #blessed_reviewers
Subscribers: epriestley, Korvin
Differential Revision: https://secure.phabricator.com/D13634
