Add SUCCESS state and buttons to PHUIErrorView

Summary: I'm looking at beefing up PHUIErrorView for additional use cases as I remove some older AphrontViews. This will likely morph into PHUIInfoView and be a more lightweight version of PHUIObjectBox.

Test Plan:
UIExamples, mobile and desktop layouts. Have actual use cases coming in next diffs (may tweak design more then)

{F311943}

Reviewers: epriestley, btrahan

Reviewed By: btrahan

Subscribers: Korvin, epriestley

Differential Revision: https://secure.phabricator.com/D11849