Soft-launch project boards

Summary: Ref T1344. I don't think we'll need to destroy any data moving forward, and would like to get more feedback about what changes users want.

Test Plan: Looked at a project and clicked onto its board.

Reviewers: chad, btrahan

Reviewed By: chad

CC: aran

Maniphest Tasks: T1344

Differential Revision: https://secure.phabricator.com/D8191

src/applications/project/controller/PhabricatorProjectProfileController.php

@@ -226,13 +226,18 @@ final class PhabricatorProjectProfileController
     }
     $view->addAction($action);
 
-
     $view->addAction(
       id(new PhabricatorActionView())
         ->setName(pht('View History'))
         ->setHref($this->getApplicationURI("history/{$id}/"))
         ->setIcon('transcript'));
 
+    $view->addAction(
+      id(new PhabricatorActionView())
+        ->setName(pht('View Board (Beta)'))
+        ->setHref($this->getApplicationURI("board/{$id}/"))
+        ->setIcon('project'));
+
     return $view;
   }