Allow to save a box of samples to be created

[diegoliberman]

After capturing the input with #1732, now this ticket is for handling the save action and basically create the configured samples, and save the box associating all the samples that were created.

Acceptance criteria

1. After saving a box that creates samples, I can do any of the following
2. I can find the box in the list of boxes
3. I can see the box detail as designed here.
4. I can find the samples that were created in the box detail and in the list of samples
5. I can transfer the box

[omelao]

#1733 will handle the save just for #1732? What about #1731?

What happens when I add a new batch? Won't it be created on database?

[diegoliberman]

I understand that #1731 will be straight forward, as is just porting a feature that already exists. That's why I considered saving the box as part of itself (see acceptance criteria number 3).

I also understand that #1732 will be more difficult and I want to clearly feel progress, that's why I'm proposing to split it in 2 tickets. With #1732 the saving of the box will need to consider many more things: creating samples, reading many UI inputs and processing it.

Finally, you can only add existing batches to the box. As it works today. We can't allow to define non-existing batches, because the batch attributes are needed for configuring the samples that are created. So it wouldn't be easy to offer a nice UX that allows creating batches while creating a box.

[sardar-usman]

@omelao It's working fine.