Games for May

For some reason, all cash received is added to 'cash given' instead of 'cash received' at .accounts. This leads to the balance being completely wrong, as getting 20s and later paying it back is considered a 40s debit rather than a transaction that neither adds credit nor debit.

Fixed on next server update.
Unfortunately I can't do anything about the historically incorrect accounts now, but future transfers will at least show up in the right columns.