Allow the salary sorter to work pots in Joint accounts

[Revels]

Salary sorter on personal account to joint account pots

Would be very useful if the salary sorter function for personal accounts could directly put money into a joint account pot. Currently this has to be done manually either before or after the sort as the salary sorter in a personal account allows salary to be sorted to a joint account, then that needs to be put into the joint pot after

@AlanDoe @Dan5