Add an icon+background selector for project images

Summary: Makes it easy to choose distinctive icons for projects.

Test Plan:
{F71018}

{F71020}

{F71019}

{F71021}

Reviewers: btrahan, chad

Reviewed By: chad

CC: chad, aran

Differential Revision: https://secure.phabricator.com/D7333

src/applications/project/application/PhabricatorApplicationProject.php

@@ -42,6 +42,8 @@ final class PhabricatorApplicationProject extends PhabricatorApplication {
           => 'PhabricatorProjectMembersEditController',
         'view/(?P<id>[1-9]\d*)/(?:(?P<page>\w+)/)?'
           => 'PhabricatorProjectProfileController',
+        'picture/(?P<id>[1-9]\d*)/' =>
+          'PhabricatorProjectProfilePictureController',
         'create/' => 'PhabricatorProjectCreateController',
         'update/(?P<id>[1-9]\d*)/(?P<action>[^/]+)/'
           => 'PhabricatorProjectUpdateController',