Add number of pieces/packages about paketin-seuranta

[ristomatti]

This sounds promising. Would it be a) about how many of X have you purchased or b) how many separate parcels are sent?

Scenario A is a bit difficult unless you only order type of an item at once. But of course it could be nice to have this somehow handled by the interface. To me it would be ideal to have a list of N product/item lines with separate count and unit fields. But maybe this would be overkill? It might also be difficult to add this in a backwards compatible manner.

And B is something I've currently been doing by adding extra tracked shipments and added something like "1/2" on the names. But it would definitely be nicer to have the possibility to add multiple tracking numbers/couriers under one tracked delivery.

@norkator I'll wait for your initial intention with this before throwing any more features in the air. 😄