Show related objects on daemon worker task queue detail pages

Summary:
See PHI287. Currently, you can't get very much information about a task in the worker queue from the web UI.

This is largely intentional (e.g., it's bad if we let you inspect the content of a "send an administrator's password reset email" task), and a lot of the data is task-class specific so it would be a lot of work to expose it, but we can add one useful piece of information pretty easily: for tasks with an `objectPHID` that points at a valid object that's visible to the user, tell the user which object the task is associated with.

Test Plan: {F5386562}

Reviewers: amckinley

Reviewed By: amckinley

Differential Revision: https://secure.phabricator.com/D18890

src/applications/daemon/controller/PhabricatorWorkerTaskDetailController.php

@@ -79,13 +79,20 @@ final class PhabricatorWorkerTaskDetailController
       ->appendChild($view);
   }
 
-  private function buildPropertyListView(
+  private function buildPropertyListView(PhabricatorWorkerTask $task) {
-    PhabricatorWorkerTask $task) {
+    $viewer = $this->getViewer();
-
-    $viewer = $this->getRequest()->getUser();
 
     $view = new PHUIPropertyListView();
 
+    $object_phid = $task->getObjectPHID();
+    if ($object_phid) {
+      $handles = $viewer->loadHandles(array($object_phid));
+      $handle = $handles[$object_phid];
+      if ($handle->isComplete()) {
+        $view->addProperty(pht('Object'), $handle->renderLink());
+      }
+    }
+
     if ($task->isArchived()) {
       switch ($task->getResult()) {
         case PhabricatorWorkerArchiveTask::RESULT_SUCCESS: