[new feature] allow an arbitrator to designate an other arbitrator in case if he has to go on vacation or else

[nihilist001]

idea is to avoid that situation:

[woodser]

The system is designed with the assumption that it takes 2 things to go wrong to be really bad, given that it's a 2/3 multisig wallet. The happy flow is completing the trade normally, and the backup is with the arbitrator, but there's no backup beyond that. Supporting a backup arbitrator would be complicated, unless they share their app, which could be the best way to do it.

[nihilist001]

without having any app changes, maybe an arbitrator literally giving his haveno files (with keys and all that) to another arbitrator that he trusts, to replace him while he's away.

But thats not ideal for sure lol