Set donations to only allow no donor for 'PENDING' transactionstate
Set IPN to not stomp on newer donations if an old (since deleted) donation comes in
- Will instead create a seperate donation, though the old comment/bid info will be lost (presumably this only helps with long-term prize drawings)
Added donation admin actions to clean out orphaned donations (i.e. fills out the comment form, but does not complete the paypal checkout)