Move ManiphestTaskQuery to EdgeLogic

Summary:
Ref T4100. Share all edge logic code across applications.

  - Internalizes the "check that the viewer can see projects" check into edge logic.
  - Adds some convenience functions. Some of these aren't really all that convenient, but it's rare that we actually apply project constraints to queries in the applications -- and most of these callsites will go away in the long term -- so I didn't go too crazy with providing a simpler `withProjectPHIDs()` universal API or anything.

Test Plan:
  - Grepped for all affected symbols.
  - Tried to violate policies.
  - Used workboards.
  - Used normal Maniphest queries.
  - Used `maniphest.query`.
  - Verified the special grouping behavior works as expected.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T4100

Differential Revision: https://secure.phabricator.com/D12526

src/applications/project/controller/PhabricatorProjectBoardViewController.php

@@ -56,7 +56,6 @@ final class PhabricatorProjectBoardViewController
     $column_query = id(new PhabricatorProjectColumnQuery())
       ->setViewer($viewer)
       ->withProjectPHIDs(array($project->getPHID()));
-
     if (!$show_hidden) {
       $column_query->withStatuses(
         array(PhabricatorProjectColumn::STATUS_ACTIVE));
@@ -160,7 +159,10 @@ final class PhabricatorProjectBoardViewController
     $task_query = $engine->buildQueryFromSavedQuery($saved);
 
     $tasks = $task_query
-      ->addWithAllProjects(array($project->getPHID()))
+      ->withEdgeLogicPHIDs(
+        PhabricatorProjectObjectHasProjectEdgeType::EDGECONST,
+        PhabricatorQueryConstraint::OPERATOR_AND,
+        array($project->getPHID()))
       ->setOrderBy(ManiphestTaskQuery::ORDER_PRIORITY)
       ->setViewer($viewer)
       ->execute();