The HR demo data now includes a corrected sample employee entry for Francis Laffineur, along with an associated employee image. This improves the realism and accuracy of demo environments used for presentations, testing, and onboarding.

@odony Improve hr demo data

Stock package handling was simplified by removing an unnecessary hierarchy tracking mechanism. This reduces the chance of update conflicts and retries when package records are changed, improving reliability in stock operations without changing expected user workflows.

The model does not actually need this feature, as the hierarchies of packages
are not expected to be deep.  Performance wise, updating columns `parent_left`
and `parent_right` may actually suffer from concurrent updates that require
retrying requests.

This modification is motivated by issue #14493.

This update corrects a broken setup configuration caused by an internal package move. It helps keep installation and packaging processes working reliably without changing business features.

After commit 79331ec, which is moving the old `openerp` package into `odoo`, the `setup.py` was left unstable.   This fixes all the issues I could find.
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