By Kirk Miller After spending a few years developing a plan for the world’s longest commercial flight, Qantas just officially announced an order for a dozen Airbus A350-1000 planes, which are capable of flying direct from Australia to New York, London or any other major city. Based on their initial seating plans for these flights (dubbed Project Sunrise), the journey sounds almost delightful, even if the flights take 20-plus hours. Each flight will carry 238 passengers, or far less than the more than 300-seat configurations offered on other long-distance flights — partially for comfort reasons…