–NEW: the "Ships from" field now shows what each entry is - an office or an address - and "default" says exactly who the sender is, instead of leaving you to guess.
–NEW: you can choose a courier office for drop-off by searching its list of offices.
–NEW: with Econt you can enter a new pickup address. With Speedy this is not possible - contract addresses are registered by a Speedy employee - and the interface says so instead of failing.
–An order now keeps exactly one sender: choosing one clears the previous one, so an address and an office can no longer both remain.