Index users in search results.

Summary:
Add users to the search results. I need to follow this up with a patch to make
the search results stop being terrible. I'll do that.

Test Plan:
Searched for users, ran "reindex_all_users.php"

Reviewed By: jungejason
Reviewers: tomo, jungejason, aran
CC: aran, jungejason
Differential Revision: 508

scripts/search/reindex_all_users.php

@@ -0,0 +1,32 @@
+#!/usr/bin/env php
+<?php
+
+/*
+ * Copyright 2011 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.
+ */
+
+$root = dirname(dirname(dirname(__FILE__)));
+require_once $root.'/scripts/__init_script__.php';
+require_once $root.'/scripts/__init_env__.php';
+
+$users = id(new PhabricatorUser())->loadAll();
+echo "Indexing ".count($users)." users";
+foreach ($users as $user) {
+  PhabricatorSearchUserIndexer::indexUser($user);
+  echo '.';
+}
+echo "\n";
+echo "Done.\n";
+