WAQM does not support Refund Txns

[thelontx]

Need to understand better to see if this can and should be supported. This appears to be a special type of Payment within WA? Depending on Payment Gateway, Refunds out of WA may not sync to refunds in Quickbooks or other systems.

Without this feature, any refunds will need to be manually reconciled in Quickbooks.

Wild Apricot's built-in Quickbooks config screen now shows Refunds as one of the types handled.

[asirota]

Could we add refunds to the summary email log to show which refunds have come through since the last run. Similar to showing which invoices were voided in #97