R1:21234be19d2a

Better tag spacing on mobile

Summary: Fixes T3574, adds better tag spacing.

Test Plan: Test objects with many, varied word tags.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: epriestley, Korvin

Maniphest Tasks: T3574

Differential Revision: https://secure.phabricator.com/D10195