Activate the multi-warehouse automatically when there is more than 1 in a company. Then remove the multi-warehouse setting in the config, and allow to create warehouse. Because create a warehouse can change groups of the user, we reload the page when there is any modification. Update warehouse demo data accordingly (remove the second warehouse of the second company). task-2196687 closes odoo/odoo#49625 Related: odoo/upgrade#1253 Related: odoo/enterprise#9934 Signed-off-by: Simon Lejeune (sle) <sle@openerp.com>