Generate addition scramble groups for a round

[jfly]

Since we're not going to export to excel, we need to generate WCA JSON for submission. This requires that organizers upload scrambles, because the WCA JSON contains scrambles.

[jfly]

Maybe this should not be done until after the organizer has created the rounds for a competition. We could generate TNoodle links for them, or even automatically talk to a local TNoodle server.

[jbmertens]

Organizers should be able to generate additional groups for any unfinished rounds. And perhaps delete existing scrambles.

Eg. use case at a small local comp: "Oh, we're ahead of schedule, let's add another round, and have 2 groups in this round so we can run things more efficiently! Now I need to generate another group of scrambles in this round."

Or: "Wow, someone is doing 500 multi cubes and I don't have enough scrambles! I need to re-generate multi scrambles for more cubes."

Etc.

[jfly]

Good points! Reopening this issue.