Jormungandr: avoid non pt journeys to be choosen as standard journey
Jormungandr: improve choose standard
Jormungandr: add test choose standard
Jormungandr: change comparator choose standard
Jormungandr: add test choose standard
Jormungandr: fix arrival_crits
Merge pull request #665 from l-vincent-l/avoid_non_pt_in_standard

Jormungandr: avoid non pt journeys to be choosen as standard journey