Fix status dot in Durable Column

Summary: Fixes T7556, adds margin instead of padding to links.

Test Plan: Set my status as away, see proper spacing.

Reviewers: btrahan, epriestley

Reviewed By: epriestley

Subscribers: Korvin, epriestley

Maniphest Tasks: T7556

Differential Revision: https://secure.phabricator.com/D12069