Odoo Release Updates

[IMP] hr_payroll: Add unique constraint on input selections

[REV] hr_payroll: Ensure hr.salary.rule selection key unicity

[FIX] hr_payroll: prevent error when period date is missing

[IMP] hr_payroll: UX property section on salary rules

[IMP] web_enteprise, *: improve states of systray items

[FIX] hr_payroll: fix error when printing employee payslip without contract

[FIX] hr_payroll: remove export payslip button

[IMP] hr_payroll: cleanup employee properties when deleting salary rule input

[FIX] hr_payroll: Put Batch account move lines in settings for every country

[IMP] hr_payroll: Ensure hr.salary.rule selection key unicity

[FIX] hr_payroll: Exclude custom separators from payroll properties

[FIX] hr_payroll: include duration_type in individual salary attachment creation

[FIX] hr_payroll: salary structure readonly

[IMP] hr_payroll: Put External codes last in payroll hr view

[IMP] resource: refactor working schedule

[REM] hr_payroll: remove work entries slot check

[FIX] hr_payroll: remove res_id on open payrun employees

[IMP] *: Add grid view to work entries

[IMP] {,l10n_{au,be,ch,lu}_}hr_*: prevent user from entering a negative wage

[IMP] *_hr_contract_salary_*: merge wage fields into one final wage field

[IMP] hr_payroll: Define a model for properties selections

[IMP] hr_payroll: Allow property names different than salary rule

[IMP] hr_payroll: Add selection properties management

[IMP] hr_payroll: salary rule category not mandatory

[FIX] hr_payroll: Prevent applying boolean condition in all cases

[FIX] hr_payroll: Add helpers to retrieve/set properties on payslips

[FIX] hr_payroll: Allow more complex properties usage on salary rule

[IMP] hr_work_entry*: add source field to work entries

[IMP] hr: add tracking on hr.version fields

[FIX] hr_payroll: fix conditional display of action button in payslip list view