old_contents: from flask.ext.sqlalchemy import SQLAlchemy
  db = SQLAlchemy()
  
  from auth import jwt
  
  from spark import Spark
  spark = Spark()
  
  from gc3pie import GC3Pie
  gc3pie = GC3Pie()
  
  from flask.ext.uwsgi_websocket import GeventWebSocket
  websocket = GeventWebSocket()
  
  from flask.ext.redis import FlaskRedis
  redis_store = FlaskRedis()
  
  
  
new_contents: from auth import jwt
  
  from spark import Spark
  spark = Spark()
  
  from gc3pie import GC3Pie
  gc3pie = GC3Pie()
  
  from flask.ext.uwsgi_websocket import GeventWebSocket
  websocket = GeventWebSocket()
  
  from flask.ext.redis import FlaskRedis
  redis_store = FlaskRedis()
  
  
  
subject: Remove obsolete sqlalchemy extension