Replace bootstrap logic with 'boot.js', use 'component/dart' mime-type and add

pkg/polymer/lib/src/static_loader.dart

-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-/// Alternative implementation for loading initializers that avoids using
-/// mirrors. Unlike `mirror_loader` this is used for deployed applications to
-/// avoid any dependence on the mirror system.
-library polymer.src.static_loader;
-
-/// Set of initializers that are invoked by `initPolymer`.  This is initialized
-/// with code automatically generated by the polymer transformers. The
-/// initialization code is injected in the entrypoint of the application.
-List<Function> initializers;
-
-/// True if we're in deployment mode.
-// TODO(sigmund): make this a const anda rem ove the assignment in
-// configureForDevelopment when our testing infrastructure supports calling pub
-// build.
-bool deployMode = true;