show last payout in stats table

app/models.py

@@ -36,6 +36,12 @@ class Operation(db.Model):
         b = cache.get_balances(self.account_idx, atomic=atomic)
         return b
 
+    def get_last_payout(self):
+        last_payout = Payout.query.filter(
+            Payout.operation_id == self.id
+        ).order_by(Payout.create_date.desc()).first()
+        return last_payout
+
     def get_pricing(self, live=False):
         if live:
             droplet_size = cache.show_droplet(self.droplet_id)['size_slug']

app/templates/stats.html

@@ -21,6 +21,7 @@
 									<th>XMR Account</th>
 									<th>Droplet ID</th>
 		              <th>Volume ID</th>
+									<th>Last Payout</th>
 		              <th>Balances</th>
 		            </tr>
 		            {% for op in all_ops['active'] | sort(attribute='create_date', reverse=True) %}
@@ -33,6 +34,7 @@
 										<td>{{ op.account_idx }}</td>
 										<td>{{ op.droplet_id }}</td>
 										<td>{{ op.volume_id }}</td>
+										<td>{{ op.get_last_payout().create_date | humanize }}</td>
 										<td>{{ unlocked }} XMR ({{ locked }} locked)</td>
 		              </tr>
 		            {% endfor %}