Assuming Subaccount identity to help a newbie

[ivelin]

Its common to have to help a new user who is learning how to use Restcomm. It would be practical to be able to assume a subaccount identity without the subaccount user disclosing their password. Restcomm should log for audit purpose who performed actions for any given account - the account holder themselves or a superaccount holder.

[deruelle]

Thanks @ivelin. Yes it's actually a Duplicate of #715 and #886