More Ponder Answer polish
Summary: Fixes T9099, I think this is as much as I can come up with for unbeta. Cleans up the answer header (profile image, smaller font, smaller header). Cleans up voting (new, with color), and makes it a bit more readable.
Test Plan:
Review a number of answers in ponder with and without votes, comments.
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: Korvin
Maniphest Tasks: T9099
Differential Revision: https://secure.phabricator.com/D13907