Scavenge archived teams

[mookid8000]

When teams are archived, the UTC time of archival is stored along with it.

When a team has been in the archive for one month (+ a few days), full delete commands should be issued for all of the contained accounts.

⚠️ PLEASE note that accounts can in theory be associated with mutliple teams. Before issuing a delete command on an account, it must be checked that no other team (archived or non-archived) must be associated with that account.