Show donations as euro in export

src/components/donors/Donors.svelte

@@ -35,7 +35,7 @@
                 d.firstname,
                 d.middlename,
                 d.lastname,
-                d.paidDonationAmount,
+                (d.paidDonationAmount/100).toFixed(2),
                 address,
               ];
             });