Store dates on delivery and avoid delivery update.

epr5_invoicing is pure base for invoicing, erp5_simplified_invoicing enables
default invoices with Invoice Lines directly in them.

Simplify the logic to find which Hosting Subscription changed.

Test can leave transaction in erroneous state, revert it.

tag has been removed.

Expanding does not depend on movement state.

True is True, when False if False.

This builder *shall* create deliveries.

No divergency should occur in the automated slapos business process.

fixConsistency can be called twice in the same transaction.

Packing List does not control instance state.

No purchase packing list are created with the software installation.

Slaptool should not try to update Packing List state.

afterSetUp logs as superuser, do not repeat it.

Thanks to this running tests outside of Zope has similar conditions: Manager
is used.