[REM][ADD]Website_sale_stock_ux replaced by website_sale_multi_warehouse

[JrAdhoc]

Now when no warehouse is set on a website, it takes the stock on every warehouse published for that company. Also, you can only set a published warehouse to a website. You cannot unpublish a warehouse if is set on a website.

[roboadhoc]

Pull request status dashboard.

[jjscarafia]

@roboadhoc r+