Added True return and info logger to fulfill_reward

ownchatbot/reward_handlers.py

@@ -242,6 +242,8 @@ def refund_reward(db, reward_id):  # Refund a user for a particular reward
             (reward_id,)
         )
         db.commit()
+        current_app.logger.info(f'Set {reward_id} as refunded in the database')
+        return True
     except Error as rferror:
         current_app.logger.error(f'Couldn\'t refund reward id {reward_id}: {rferror.args[0]}')
         return False