Bug 23376: Clean up order receipt page code

Bug 23376: Clean up order receipt page code

This patchset switches from using DB lookups to using an order object for most things on orderreceive.pl

It simplifies the script and makes minimal changes to the template

To test:
1 - Place some orders and receive them
2 - Have orders with or without subscriptions attached
3 - Try with different AcqCreateItems settings
4 - Apply patch
5 - No behaviour should change
6 - Read code to ensure things make sense

Signed-off-by: Agustin Moyano <agustinmoyano@theke.io>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>