Add project tags to workboard cards

Summary: Ref T4863. Add project tags to workboard cards.

Test Plan: {F1053509}

Reviewers: joshuaspence, #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: Luke081515.2, Korvin

Maniphest Tasks: T4863

Differential Revision: https://secure.phabricator.com/D14935

src/applications/project/controller/PhabricatorProjectBoardViewController.php

@@ -304,6 +304,7 @@ final class PhabricatorProjectBoardViewController
         $can_edit = idx($task_can_edit_map, $task->getPHID(), false);
         $cards->addItem(id(new ProjectBoardTaskCard())
           ->setViewer($viewer)
+          ->setProject($project)
           ->setTask($task)
           ->setOwner($owner)
           ->setCanEdit($can_edit)