Summary: The shadow on the white icons was too harsh for their size, looked bad on timelines.
Test Plan: Check timeline example, phuilist example.
Reviewers: epriestley, btrahan
Reviewed By: epriestley
CC: aran, Korvin
Differential Revision: https://secure.phabricator.com/D6176
Summary: Tweaks the dark, grey, and white icons to match the action-icons. Also added a home icon for navigation.
Test Plan: looked at list navs, action menus.
Reviewers: epriestley
Reviewed By: epriestley
CC: aran, Korvin
Differential Revision: https://secure.phabricator.com/D6142
