R1:5d966897f14a

Add Outline tag type to PHUITagView

Summary: Adds a new tag type, starts to try to clean up the mess that are PHUITags

Test Plan:
Review UIExamples.

{F4972323}

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Differential Revision: https://secure.phabricator.com/D17991