fluid diff -- more table silliness

Summary: inline comments eat up all 3 tds and no code coverage should be shown.

Test Plan: verified in FIREFOX that inline comments looked good

Reviewers: vrana, epriestley

Reviewed By: epriestley

CC: aran, Korvin

Maniphest Tasks: T2005

Differential Revision: https://secure.phabricator.com/D4115