**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):


addons/account/models/res_config_settings.py
module_account_budget = fields.Boolean(string='Budget Management')
    module_account_payment = fields.Boolean(string='Online Payment')
    module_account_reports = fields.Boolean("Dynamic Reports")
    module_account_reports_followup = fields.Boolean("Enable payment followup management")
    default_sale_tax_id = fields.Many2one('account.tax', string="Default Sale Tax",
        company_dependent=True, oldname="default_sale_tax")
    default_purchase_tax_id = fields.Many2one('account.tax', string="Default Purchase Tax",
        company_dependent=True, oldname="default_purchase_tax")
    module_l10n_us_check_printing = fields.Boolean("Allow check printing and deposits")
    module_account_batch_deposit = fields.Boolean(string='Use batch deposit',
        help='This allows you to group received checks before you deposit them to the bank.\n'
             '-This installs the module account_batch_deposit.')
    module_account_sepa = fields.Boolean(string='Use SEPA payments')
    module_account_sepa_direct_debit = fields.Boolean(string='Use SEPA Direct Debit')
    module_account_plaid = fields.Boolean(string="Plaid Connector")
    module_account_yodlee = fields.Boolean("Bank Interface - Sync your bank feeds automatically")
    module_account_bank_statement_import_qif = fields.Boolean("Import .qif files")
    module_account_bank_statement_import_ofx = fields.Boolean("Import in .ofx format")
    module_account_bank_statement_import_csv = fields.Boolean("Import in .csv format")
    module_account_bank_statement_import_camt = fields.Boolean("Import in CAMT.053 format")
    module_currency_rate_live = fields.Boolean(string="Allow Currency Rate Live")
    module_print_docsaway = fields.Boolean(string="Docsaway")
    module_product_margin = fields.Boolean(string="Allow Product Margin")
    module_l10n_eu_service = fields.Boolean(string="EU Digital Goods VAT")
    module_account_taxcloud = fields.Boolean(string="Account TaxCloud")
    tax_exigibility = fields.Boolean(string='Cash Basis', related='company_id.tax_exigibility')
    tax_cash_basis_journal_id = fields.Many2one('account.journal', related='company_id.tax_cash_basis_journal_id', string="Tax Cash Basis Journal")
    account_hide_setup_bar = fields.Boolean(string='Hide Setup Bar', related='company_id.account_setup_bar_closed',help="Tick if you wish to hide the setup bar on the dashboard")
    @api.model
    def get_values(self):