Use an ir.config_parameters to set the period for the stock quantity report to ease customization. closes odoo/odoo#163266 X-original-commit: 86da6978bd683c4b67f7303138a3037af5c48328 Signed-off-by: Arnold Moyaux (arm) <arm@odoo.com> Signed-off-by: Nicolas Danhier (nda) <nda@odoo.com>