R1:4ae548f9ba70

Reduce vertical height on object list.

Summary: Tightens up the spacing between the title and subtitle, helps shave 3px an object.

Test Plan: epriestley

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D4654