Display lint overview in Diffusion

Summary: I will add links from /diffusion/ARC/lint/ in future diff.

Test Plan:
/diffusion/ - clicked on lint messages link.
/diffusion/ARC/ - clicked on lint messages link.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D3926

src/applications/diffusion/application/PhabricatorApplicationDiffusion.php

@@ -41,6 +41,7 @@ final class PhabricatorApplicationDiffusion extends PhabricatorApplication {
           'diff/'                       => 'DiffusionDiffController',
           'tags/(?P<dblob>.*)'          => 'DiffusionTagListController',
           'branches/(?P<dblob>.*)'      => 'DiffusionBranchTableController',
+          'lint/(?P<dblob>.*)'          => 'DiffusionLintController',
 
           'commit/(?P<commit>[a-z0-9]+)/branches/'
             => 'DiffusionCommitBranchesController',