Add package info
fix import order so we can access to sinatra vars
Remove username from facebook api calls

* GraphAPI v2 removed the access of username and it throwed a 400 error.
* the username was removed from the facebook calls in the front end
* Improve how we handle the failed facebook api calls, adding a rejected
  callback
remove username from the backend

* facebook graph api deprecated this value so we removed it from the
  backend