Payroll users can now open an employee contract directly in the main page from a payslip instead of a smaller pop-up window. This makes it easier to review detailed contract information and prevents creating contracts on the fly from payroll screens, reducing accidental or inappropriate records.

This commit adds a new widget to open a many2one field in current mode from a form view instead of a modal view. This is useful when the view to load is too heavy/big and the user wants to quickly check some information.

task-3818439

Barcode commands and demo barcodes were updated to use shorter, easier-to-read values without special characters. This makes barcode sheets and shop floor workflows easier for staff to understand, remember, and scan consistently.

*: stock_barcode{_mrp,_picking_batch}, mrp_workorder

Revamp the barcodes of commands and demo data to be shorter and with no special characters. So that they are more readable and easier to remember.

COM PR: odoo/odoo#158827

Task-3774096