Update forms to use PHUIFormBoxView

Summary: Some more callsites, let me know if you see others, I think think is 98% of them now.

Test Plan: tested each page

Reviewers: epriestley, btrahan

Reviewed By: btrahan

CC: Korvin, aran

Differential Revision: https://secure.phabricator.com/D6814

src/applications/diffusion/controller/DiffusionCommitController.php

@@ -610,6 +610,7 @@ final class DiffusionCommitController extends DiffusionController {
 
     $form = id(new AphrontFormView())
       ->setUser($user)
+      ->setShaded(true)
       ->setAction('/audit/addcomment/')
       ->addHiddenInput('commit', $commit->getPHID())
       ->appendChild(