MVJ-550 override_receivable_type in Rent (UI)

[juho-kettunen-nc]

This implements the UI part of override receivable type, where it is a property of Rent, instead of ContractRent as in #544

[juho-kettunen-nc]

Still requires customer blessing to use this Rent version instead of the ContractRent, but this is the best version of the logic we have right now.

[henrinie-nc]

This seems usable. Improvement might be to add an attribute to the service unit model to dictate whether to use override field for this service unit, so we would not need to hard code lists of ID's and define code with service unit names.

Check my comments on the changes before merging.

[juho-kettunen-nc]

Added new field use_rent_override_receivable_type to the ServiceUnit model, and adjusted logic accordingly.

• API City-of-Helsinki/mvj@1277eed
• UI fb1f3f3

Input validation and tests in City-of-Helsinki/mvj@9e4c041

[henrinie-nc]

Added new field use_rent_override_receivable_type to the ServiceUnit model, and adjusted logic accordingly.

* API [City-of-Helsinki/mvj@1277eed](https://github.com/City-of-Helsinki/mvj/commit/1277eed1f0152ecfb9f1f422d6a8a3adfeaa8355)

* UI [fb1f3f3](https://github.com/City-of-Helsinki/mvj-ui/commit/fb1f3f31c8652e6b3a050104ed07587d06e47bf3)

Input validation and tests in City-of-Helsinki/mvj@9e4c041

Looks good for the UI part!

[juho-kettunen-nc]

Reminder to self: squash, or rebase locally