Localizes the date into french in the admin page of payments

coin/billing/models.py

@@ -439,12 +439,13 @@ class Payment(models.Model):
         self.save()
 
     def __unicode__(self):
+        date = self.date.strftime("%d/%m/%Y")
         if self.member is not None:
-            return 'Paiment de {:0.2f}€ le {} par {}'.format(
-                self.amount, self.date, self.member)
+            return 'Paiment de {}€ le {} par {}'.format(
+                self.amount, date, self.member)
         else:
-            return 'Paiment de {:0.2f}€ le {}'.format(
-                self.amount, self.date)
+            return 'Paiment de {}€ le {}'.format(
+                self.amount, date)
 
     class Meta:
         verbose_name = 'paiement'