Move files in Phabricator one level up

Summary:
- `kill_init.php` said "Moving 1000 files" - I hope that this is not some limit in `FileFinder`.
- [src/infrastructure/celerity] `git mv utils.php map.php; git mv api/utils.php api.php`
- Comment `phutil_libraries` in `.arcconfig` and run `arc liberate`.

NOTE: `arc diff` timed out so I'm pushing it without review.

Test Plan:
/D1234
Browsed around, especially in `applications/repository/worker/commitchangeparser` and `applications/` in general.

Auditors: epriestley

Maniphest Tasks: T1103

src/applications/daemon/controller/PhabricatorWorkerTaskUpdateController.php

@@ -0,0 +1,82 @@
+<?php
+
+/*
+ * Copyright 2012 Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+final class PhabricatorWorkerTaskUpdateController
+  extends PhabricatorDaemonController {
+
+  private $id;
+  private $action;
+
+  public function willProcessRequest(array $data) {
+    $this->id = $data['id'];
+    $this->action = $data['action'];
+  }
+
+  public function processRequest() {
+    $request = $this->getRequest();
+    $user = $request->getUser();
+
+    $task = id(new PhabricatorWorkerTask())->load($this->id);
+    if (!$task) {
+      return new Aphront404Response();
+    }
+
+    if ($request->isFormPost()) {
+      switch ($this->action) {
+        case 'delete':
+          $task->delete();
+          break;
+        case 'release':
+          $task->setLeaseOwner(null);
+          $task->setLeaseExpires(time());
+          $task->save();
+          break;
+      }
+      return id(new AphrontRedirectResponse())->setURI('/daemon/');
+    }
+
+    $dialog = new AphrontDialogView();
+    $dialog->setUser($user);
+
+    switch ($this->action) {
+      case 'delete':
+        $dialog->setTitle('Really delete task?');
+        $dialog->appendChild(
+          '<p>The work this task represents will never be performed if you '.
+          'delete it. Are you sure you want to delete it?</p>');
+        $dialog->addSubmitButton('Delete Task');
+        break;
+      case 'release':
+        $dialog->setTitle('Really free task lease?');
+        $dialog->appendChild(
+          '<p>If the process which owns the task lease is still doing work '.
+          'on it, the work may be performed twice. Are you sure you '.
+          'want to free the lease?</p>');
+        $dialog->addSubmitButton('Free Lease');
+        break;
+      default:
+        return new Aphront404Response();
+    }
+
+
+    $dialog->addCancelButton('/daemon/');
+
+    return id(new AphrontDialogResponse())->setDialog($dialog);
+  }
+
+}