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/home/controller/PhabricatorHomeMainController.php

@@ -179,7 +179,10 @@ final class PhabricatorHomeMainController extends PhabricatorHomeController {
         ->setViewer($user)
         ->withStatuses(ManiphestTaskStatus::getOpenStatusConstants())
         ->withPriorities(array($needs_triage))
-        ->withAnyProjects(mpull($projects, 'getPHID'))
+        ->withEdgeLogicPHIDs(
+          PhabricatorProjectObjectHasProjectEdgeType::EDGECONST,
+          PhabricatorQueryConstraint::OPERATOR_OR,
+          mpull($projects, 'getPHID'))
         ->needProjectPHIDs(true)
         ->setLimit(10);
       $tasks = $task_query->execute();