Move fake-app.js to test folder

Also exclude *_test.html files from BUCK app glob

Change-Id: If1890b46ffb7d4657bdea83786de5262343835ff

polygerrit-ui/app/scripts/fake-app.js

@@ -1,28 +0,0 @@
-// Copyright (C) 2015 The Android Open Source Project
-//
-// 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.
-
-'use strict';
-
-/**
- * A stub of the global gr-app element. Use this for testing.
- */
-var app = {
-  accountReady: {
-    then: function(cb) { cb(); },
-  },
-  configReady: {
-    then: function(cb) { cb(); },
-  },
-  loggedIn: false,
-};