added Seats
Merge branch 'master' of https://github.com/vhilly/Archipelago-Shipping-Lines-Ticketing-System
Merge branch 'master' of https://github.com/vhilly/Archipelago-Shipping-Lines-Ticketing-System
Merge branch 'master' of https://github.com/vhilly/Archipelago-Shipping-Lines-Ticketing-System