Summary: This provides some new display methods and examples to PHUIFeedStory.
Test Plan: Tested UIExamples Page, mobile layouts, and existing Feed Pages (feed, profile, etc). I want to add a bit more but am stopping here since it's not a priority.
Reviewers: epriestley, btrahan
Reviewed By: epriestley
CC: aran, Korvin
Differential Revision: https://secure.phabricator.com/D5749
