On a note about payments...
For the love of all that's holy could you please make the "Manual Payment Information" a selectable client payment method for client's paying by cheque. Currently it only appears "if an invoice has no payment gateways". Boo! This is such a pain right now to work around.
Additionally invoices that clients select "Manual Payment" for should have that invoice flagged as status "Payment Pending" or something to that effect.