Summary: Icons for close or delete in action headers
Test Plan: photoshop, diffcamp
Reviewers: epriestley, btrahan
Reviewed By: epriestley
CC: aran, Korvin
Differential Revision: https://secure.phabricator.com/D5643
Summary: First pass at 'action icons' for headers and other items. Ties into future diff.
Test Plan: photoshop, read the css.
Reviewers: epriestley, btrahan
Reviewed By: epriestley
CC: aran, Korvin, AnhNhan
Differential Revision: https://secure.phabricator.com/D5565
