Visual update to Conpherence Durable Column

Summary: Numerous visual updates to the Durable Column, mostly to emulate current Conpherence look and feel.

Test Plan: Lots of little pixel chasing. Also Chrome, Firefox.

Reviewers: epriestley, btrahan

Reviewed By: btrahan

Subscribers: Korvin, epriestley

Differential Revision: https://secure.phabricator.com/D12041