Impacted versions:
10.0

Steps to reproduce:
Install `l10n_jp` and configure a company to use this chart of account in the menu `Accounting > Settings`

Current behavior:

Error is thrown:
```python
Traceback (most recent call last):
  File "/opt/odoo/src/odoo/http.py", line 638, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "/opt/odoo/src/odoo/http.py", line 675, in dispatch
    result = self._call_function(**self.params)
  File "/opt/odoo/src/odoo/http.py", line 331, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/opt/odoo/src/odoo/service/model.py", line 119, in wrapper
    return f(dbname, *args, **kwargs)
  File "/opt/odoo/src/odoo/http.py", line 324, in checked_call
    result = self.endpoint(*a, **kw)
  File "/opt/odoo/src/odoo/http.py", line 933, in __call__
    return self.method(*args, **kw)
  File "/opt/odoo/src/odoo/http.py", line 504, in response_wrap
    response = f(*args, **kw)
  File "/opt/odoo/src/addons/web/controllers/main.py", line 866, in call_button
    action = self._call_kw(model, method, args, {})
  File "/opt/odoo/src/addons/web/controllers/main.py", line 854, in _call_kw
    return call_kw(request.env[model], method, args, kwargs)
  File "/opt/odoo/src/odoo/api.py", line 681, in call_kw
    return call_kw_multi(method, model, args, kwargs)
  File "/opt/odoo/src/odoo/api.py", line 672, in call_kw_multi
    result = method(recs, *args, **kwargs)
  File "/opt/odoo/src/odoo/addons/base/res/res_config.py", line 537, in execute
    getattr(self, method)()
  File "/opt/odoo/src/addons/account/models/res_config.py", line 261, in set_chart_of_accounts
    wizard.execute()
  File "/opt/odoo/src/addons/account/models/chart_template.py", line 821, in execute
    acc_template_ref, taxes_ref = self.chart_template_id._install_template(company, code_digits=self.code_digits, transfer_account_id=self.transfer_account_id)
  File "/opt/odoo/src/addons/account/models/chart_template.py", line 280, in _install_template
    tmp1, tmp2 = self._load_template(company, code_digits=code_digits, transfer_account_id=transfer_account_id, account_ref=acc_ref, taxes_ref=taxes_ref)
  File "/opt/odoo/src/addons/account/models/chart_template.py", line 336, in _load_template
    self.generate_fiscal_position(taxes_ref, account_ref, company)
  File "/opt/odoo/src/addons/account/models/chart_template.py", line 455, in generate_fiscal_position
    'position_id': new_fp
  File "/opt/odoo/src/addons/account/models/chart_template.py", line 350, in create_record_with_xmlid
    new_xml_id = str(company.id)+'_'+template_xmlid.name
TypeError: cannot concatenate 'str' and 'bool' objects
```

Expected behavior:

Chart of account is correctly configured for the desired company

Video/Screenshot link (optional):
![selection_012](https://cloud.githubusercontent.com/assets/8102312/22685563/148b11b2-ed21-11e6-97e4-1a88049eddfa.jpg)

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)
        
        if self.sale_tax_id and taxes_ref:
            ir_values_obj.sudo().set_default('product.template', "taxes_id", [taxes_ref[self.sale_tax_id.id]], for_all_users=True, company_id=company.id)
        if self.purchase_tax_id and taxes_ref:
            ir_values_obj.sudo().set_default('product.template', "supplier_taxes_id", [taxes_ref[self.purchase_tax_id.id]], for_all_users=True, company_id=company.id)
        
        self._create_bank_journals_from_o2m(company, acc_template_ref)
        
        account_obj = self.env['account.account']
        unaffected_earnings_xml = self.env.ref("account.data_unaffected_earnings")
        if unaffected_earnings_xml and not account_obj.search([('company_id', '=', company.id), ('user_type_id', '=', unaffected_earnings_xml.id)]):
            account_obj.create({
                'code': '999999',
                'name': _('Undistributed Profits/Losses'),
                'user_type_id': unaffected_earnings_xml.id,
                'company_id': company.id,})
        return {}
    @api.multi
    def _create_bank_journals_from_o2m(self, company, acc_template_ref):