Shuffle project information around on detail page

Summary:
Ref T4007. Fixes T4009. Ref T4008.

  - Move blurb to a text section.
  - Make it render as remarkup.
  - Put policy information and status information in header.

Test Plan: See screenshot.

Reviewers: chad, btrahan

Reviewed By: chad

CC: aran

Maniphest Tasks: T4009, T4007, T4008

Differential Revision: https://secure.phabricator.com/D7373

src/applications/project/controller/PhabricatorProjectProfileEditController.php

@@ -127,8 +127,8 @@ final class PhabricatorProjectProfileEditController
           ->setOptions($options)
           ->setValue($project->getStatus()))
       ->appendChild(
-        id(new AphrontFormTextAreaControl())
-          ->setLabel(pht('Blurb'))
+        id(new PhabricatorRemarkupControl())
+          ->setLabel(pht('Description'))
           ->setName('blurb')
           ->setValue($profile->getBlurb()))
       ->appendChild(