Project - use hashtag as a way to access project profile in URI, e.g. /project/hashtag/

Summary: Fixes T4022. Hooks up the project profile controller to understanding URIs like /project/hashtag/ Also, makes handles have the new /project/hashtag/ URI by default, thus upselling that feature super duper heavily.

Test Plan: clicked some project links, noted pretty uri and page working nicely.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: chad, epriestley, Korvin

Maniphest Tasks: T4022

Differential Revision: https://secure.phabricator.com/D9260

src/applications/project/application/PhabricatorApplicationProject.php

@@ -67,6 +67,10 @@ final class PhabricatorApplicationProject extends PhabricatorApplication {
         'history/(?P<id>[1-9]\d*)/' => 'PhabricatorProjectHistoryController',
         '(?P<action>watch|unwatch)/(?P<id>[1-9]\d*)/'
           => 'PhabricatorProjectWatchController',
+
+      ),
+      '/tag/' => array(
+        '(?P<slug>[^/]+)/' => 'PhabricatorProjectProfileController',
       ),
     );
   }