**Impacted versions:** 11.0

**Steps to reproduce:** 

- Configures a user with access to several companies


![administrator odoo](https://user-images.githubusercontent.com/5775695/29488651-46b4cec2-84dd-11e7-9495-e8518e93d336.png)

**Current behavior:**

- In the accounting configuration there is shared field displayed by defects for the sales tax account and purchase tax account
![configure accounting odoo 1](https://user-images.githubusercontent.com/5775695/29488677-f5b53d12-84dd-11e7-8124-831b52423719.png)


**Expected behavior:**

The value of those fields depends on the company. The users that belong to different companies may see by default different values for the field on a given record

Video/Screenshot link (optional):


res = self.env[model].search([('company_id', '=', self.company_id.id)])
                if len(res):
                    res.unlink()
            existing_accounts.unlink()
        company = self.company_id
        self.company_id.write({'currency_id': self.currency_id.id,
                               'accounts_code_digits': self.code_digits,
                               'anglo_saxon_accounting': self.use_anglo_saxon,
                               'bank_account_code_prefix': self.bank_account_code_prefix,
                               'cash_account_code_prefix': self.cash_account_code_prefix,
                               'chart_template_id': self.chart_template_id.id})
        
        self.currency_id.write({'active': True})
        
        if company.id == 1:
            for reference in ['product.list_price', 'product.standard_price', 'product.list0']:
                try:
                    tmp2 = self.env.ref(reference).write({'currency_id': self.currency_id.id})
                except ValueError:
                    pass
        
        self._create_tax_templates_from_rates(company.id)
        
        acc_template_ref, taxes_ref = self.chart_template_id._install_template(company, code_digits=self.code_digits, transfer_account_id=self.transfer_account_id)
        
        IrDefault = self.env['ir.default']
        IrConfig = self.env['ir.config_parameter']
        if self.sale_tax_id and taxes_ref:
            IrDefault.sudo().set('product.template', "taxes_id", [taxes_ref[self.sale_tax_id.id]], company_id=company.id)
            IrConfig.sudo().set_param("account.default_sale_tax_id", taxes_ref[self.sale_tax_id.id])