CanalTP/navitia — pull request #610 by l-vincent-l (2014-10-06 10:19:16+00:00)
Title: Jormungandr drop db

Drop usage of database in Jormungandr:
We check in every instance if the id is in it or not, then we cache it.

To cache we use: https://pythonhosted.org/Flask-Cache/

Thus we no longer need aggregate_places \o/.

Some improvements has to be made:
* we need to paralellize calls to kraken.
* Maybe we can cache per request the region.
* It would be great if id request to kraken were computed before others