ConfigIssueView minor tweaks

Summary: Minor, adds border, reduces greys, etc.

Test Plan:
View a number of config issues, see new colors.

{F282035}

Reviewers: btrahan, epriestley

Reviewed By: epriestley

Subscribers: Korvin, epriestley

Differential Revision: https://secure.phabricator.com/D11650

src/applications/config/controller/PhabricatorConfigIssueViewController.php

@@ -38,6 +38,7 @@ final class PhabricatorConfigIssueViewController
 
     $crumbs = $this
       ->buildApplicationCrumbs()
+      ->setBorder(true)
       ->addTextCrumb(pht('Setup Issues'), $this->getApplicationURI('issue/'))
       ->addTextCrumb($title, $request->getRequestURI());