Normalize 'conpherence-edited' UI between full and column

Summary: Normalizes size and colors. Default to non-bold names, grey text, and hide the time in column. Also re-evaluated header spacing in Photoshop.

Test Plan: Lots of photoshop, tested full in desktop, mobile and tablet and normal durable column. This was sadly 2 hours of work.

Reviewers: epriestley

Subscribers: Korvin, epriestley

Differential Revision: https://secure.phabricator.com/D12087