Explicitly load assets in revision list

Summary:
Rendering method shouldn't load data.
The view probably shouldn't load data either because it is a job for component (object that both loads data and displays them) but we don't have that concept in Phabricator.
This at least improves the architecture a little bit.

Test Plan: /differential/

Reviewers: epriestley

Reviewed By: epriestley

CC: alanh, aran, Korvin

Differential Revision: https://secure.phabricator.com/D3325

src/applications/directory/controller/PhabricatorDirectoryMainController.php

@@ -326,7 +326,8 @@ final class PhabricatorDirectoryMainController
       ->setHighlightAge(true)
       ->setRevisions($active)
       ->setFields(DifferentialRevisionListView::getDefaultFields())
-      ->setUser($user);
+      ->setUser($user)
+      ->loadAssets();
     $phids = array_merge(
       array($user_phid),
       $revision_view->getRequiredHandlePHIDs());