Add Success/Fail states to PHUIObjectList

Summary:
A number of interfaces could use a more consice looking ObjectItemList for showing pass/fail/warn states.

 - Added a new "State" for PHUIObjectItemListView
 - Updated UIExamples
 - Implemented in Herald (next Harmormaster)

Test Plan: UIExamples / Herald, desktop and mobile

Reviewers: btrahan, epriestley

Reviewed By: epriestley

Subscribers: epriestley, Korvin

Differential Revision: https://secure.phabricator.com/D8893

src/applications/uiexample/controller/PhabricatorUIExampleRenderController.php

@@ -45,7 +45,8 @@ final class PhabricatorUIExampleRenderController extends PhabricatorController {
 
     $header = id(new PHUIHeaderView())
       ->setHeader(pht('%s (%s)', $example->getName(), get_class($example)))
-      ->setSubheader($example->getDescription());
+      ->setSubheader($example->getDescription())
+      ->setNoBackground(true);
 
     $nav->appendChild(
       array(