Update PHUIActionPanelView

Summary: Making these a little more fun, a little more flexible and better looking. Will have an update for rSAAS in a bit.

Test Plan:
Make lots of them. Click.

{F815658}

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Differential Revision: https://secure.phabricator.com/D14115