The patron hold history page shows the date a hold was placed, expired, waiting, or cancelled. But for a hold that was successfully fulfilled, we don't have an easy way of showing the date on which the fulfillment happened. We should create reserves.fulfillmentdate (and old_reserves.fulfillment date) and show that on holdshistory.pl. It's helpful data that users will like to see. Right now, one must rely on either old_reserves.timestamp (which can change) or a rough match on borrowernumber, itemnumber, and timetamp in the old_issues table.