Dashboard UI stuffs

Summary:

• Make CSS more resilient with columns
  • Add objectlist css
  • Fix Maniphest list css

Test Plan:
Tested a number of different panels and dashboards, desktop, tablet, and mobile.

{F159447}

Reviewers: btrahan, epriestley

Reviewed By: epriestley

Subscribers: epriestley, Korvin

Differential Revision: https://secure.phabricator.com/D9273