Simplify Diffusion Browse Table

Summary: Cleans up colors, removes commit hash and links the text instead. Also unsure how valuable "lint" column is here, but left it. I'd maybe like to understand that workflow since it just seems like clutter overall. Also Fixes T12905

Test Plan:
Review Phabricator, hg, and a few other test repositories locally. Holler if anything here seems bad, but this feels easier to read and use to me.

{F5038425}

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Maniphest Tasks: T12905

Differential Revision: https://secure.phabricator.com/D18189