Convert PHUIObjectBoxView to AphrontTagView

Summary: Attempting to clean PHUIObjectBoxView up a little as well as finally being able to `addClass` on the sucker. I'm running into some issue with `addTabs` though, which on Files isn't firing.

Test Plan: Bounce around tons of screens.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Differential Revision: https://secure.phabricator.com/D15291

src/applications/project/controller/PhabricatorProjectProfileController.php

@@ -59,14 +59,14 @@ final class PhabricatorProjectProfileController
       ->setUser($viewer)
       ->setProject($project)
       ->setLimit(5)
-      ->setBackground(PHUIBoxView::GREY)
+      ->setBackground(PHUIObjectBoxView::GREY)
       ->setUserPHIDs($project->getMemberPHIDs());
 
     $watcher_list = id(new PhabricatorProjectWatcherListView())
       ->setUser($viewer)
       ->setProject($project)
       ->setLimit(5)
-      ->setBackground(PHUIBoxView::GREY)
+      ->setBackground(PHUIObjectBoxView::GREY)
       ->setUserPHIDs($project->getWatcherPHIDs());
 
     $nav = $this->getProfileMenu();
@@ -244,7 +244,7 @@ final class PhabricatorProjectProfileController
 
     return id(new PHUIObjectBoxView())
       ->setHeader($header)
-      ->setBackground(PHUIBoxView::GREY)
+      ->setBackground(PHUIObjectBoxView::GREY)
       ->setObjectList($milestone_list);
   }
 
@@ -292,7 +292,7 @@ final class PhabricatorProjectProfileController
 
     return id(new PHUIObjectBoxView())
       ->setHeader($header)
-      ->setBackground(PHUIBoxView::GREY)
+      ->setBackground(PHUIObjectBoxView::GREY)
       ->setObjectList($subproject_list);
   }