Better mobile display of ObjectItemView

Summary: Makes the default 3 rows on mobile devices, with larger fonts. Differential/Audit is much better, Maniphest is maybe a sidegrade depending on setup.

Test Plan: test maniphest, audit, differential list items.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: epriestley, Korvin

Differential Revision: https://secure.phabricator.com/D8741