Fix some small notification / token issues

Summary:
Fixes T3218.

  - Currently, Paste pages don't clear notifications about the paste (notably, token notifications).
  - Currently, Paste pages don't show tooltips on tokens.
  - `buildApplicationPage()` stopped respecting `pageObjects` (which controls whether "this page has been updated" is shown). Restore that.
  - Make `pageObjects` imply "clear notifications on this stuff".

Test Plan: Viewed a tokened Paste. Verified it cleared the notification and hovering over a token showed a tip.

Reviewers: btrahan, chad

Reviewed By: chad

CC: aran

Maniphest Tasks: T3218

Differential Revision: https://secure.phabricator.com/D5971

src/applications/differential/controller/DifferentialRevisionViewController.php

@@ -398,9 +398,6 @@ final class DifferentialRevisionViewController extends DifferentialController {
       $page_pane->appendChild($comment_form->render());
     }
 
-    PhabricatorFeedStoryNotification::updateObjectNotificationViews(
-      $user, $revision->getPHID());
-
     $object_id = 'D'.$revision->getID();
 
     $top_anchor = id(new PhabricatorAnchorView())
@@ -445,6 +442,7 @@ final class DifferentialRevisionViewController extends DifferentialController {
       $content,
       array(
         'title' => $object_id.' '.$revision->getTitle(),
+        'pageObjects' => array($revision->getPHID()),
       ));
   }