It leads to always return nothing, as it does a join to the category table

Customer can buy Virtual MAster

It creates unresolvable dependency

This reverts commit 42c90b1f.

Break everything, to investigate how we could integrate Open Order with Compute Node

slapos_accounting: invoice builder: dates are now set on delivery. Do not modify causality if it exists

Previously, we has 1 invoice per simulation tree.
But we want to reduce the number of invoice, without using the "aggregate" builder trick