Assign hub to an airline

[medibasti05]

feature request It would be nice to be able to assign a hub to an airline. (Option to add or remove multiple airlines per hub).

Background: If there are several airlines, not every hub is intended for all airlines.

On the registration page it happens regularly that pilots select a hub which is not intended for the airline.

Describe the solution you'd like

Select hub-> select Airline + add Airline. Option to remove Airline. Solution as for the "Ranks" of the Subfleet.

Customization of the registration page: If the person has selected an airline, automatic selection of the home airport which is available for the airline. Hide the other airline hubs.

[FatihKoz]

Needs: Many to Many relationship, Model changes, Routes to add/remove (like ranks, type ratings etc)