Increase maximum file upload to 100MB, use cloudstorage python library

app/models/package.py

 # Copyright (c) 2012, 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.
 
 import cgi
 import json
 import logging
 
 from google.appengine.api import memcache
 from google.appengine.api import users
 from google.appengine.ext import db
 
 import models
 from pubspec import Pubspec
 
 class Package(db.Model):
     """The model for a package.
 
     A package contains only metadata that applies to every version of the
     package, such as its name and uploader. Each individual version of the
     package is represented by a PackageVersion model.
 
     Whenever a new PackageVersion for a Package is added or modified, you must
     call invalidate_cache() to ensure any stale cached description of the
     package is discarded.
     """
 
-    MAX_SIZE = 10 * 2**20 # 10MB
+    MAX_SIZE = 100 * 2**20 # 100MB
     """The maximum package size, in bytes."""
 
     uploaderEmails = db.StringListProperty(validator=models.validate_not_empty)
     """The user emails who are allowed to upload new versions of the package.
 
     When this is set, invalidate_cache() must be called."""
 
     name = db.StringProperty(required=True)
     """The name of the package."""
 
@@ skipping 191 matching lines @@
 
     @property
     def _package_json_cache_key(self):
         """The memcache key for the cached JSON for this package."""
         return 'package_json_' + self.name
 
     @property
     def _dart_package_json_cache_key(self):
         """The Dart memcache key for the cached JSON for this package."""
         return 'dart_package_json_' + self.name