Display number of lint messages in Diffusion dir

Test Plan:
Went to https://secure.phabricator.com/diffusion/ARC/browse/.
Saw number of lint messages per dir, not terribly slow.
Went to https://secure.phabricator.com/diffusion/ARC/browse/master/src/difference/.
Saw number of lint messages per file.
Disabled lint, didn't see it.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D3921

src/applications/diffusion/controller/DiffusionLastModifiedController.php

@@ -24,7 +24,7 @@ final class DiffusionLastModifiedController extends DiffusionController {
     $handles = $this->loadViewerHandles($phids);
 
     $output = DiffusionBrowseTableView::renderLastModifiedColumns(
-      $drequest->getRepository(),
+      $drequest,
       $handles,
       $commit,
       $commit_data);