Main waypoint helpers

[cbeauchesne]

• When a route is created from a waypoint page, this waypoint is automaticly associated to the new route > set it as the main waypoint
• When a route is created without main waypoint, add a confirmation popup :
  • "Main waypoint is not set for this route, do you confirm ?"
  • https://forum.camptocamp.org/t/nouvelle-interface-bugs-questions-suggestions/241148/133?u=charlesb

[cbeauchesne]

@fbunoz says :

FR : Aucun point de passage n'est sélectionné pour le titre de l'itinéraire. Est-ce correct ?
EN : No waypoint is selected for the route title. Is it correct ?

[cbeauchesne]

See https://forum.camptocamp.org/t/nouvelle-interface-bugs-questions-suggestions/241148/160?u=charlesb