Jormungandr: add posibility to sort by departure hour on journeys

It's another parameter in the jormungandr database, so you need to
upgrade the database.
I will add cache after the PR on "drop db" is merged
Jormungandr: add cache on ```Instance.journey_order```
Jormungandr: fix db migration with the last rebase
Jormungandr: reactivate quiet mode on thread ping
Merge pull request #630 from kinnou02/scenario_bretagne

Jormungandr: add possibility to sort by departure hour on journeys