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)

_name = "account.account.template"
    _description = 'Templates for Accounts'
    _order = "code"
    name = fields.Char(required=True, index=True)
    currency_id = fields.Many2one('res.currency', string='Account Currency', help="Forces all moves for this account to have this secondary currency.")
    code = fields.Char(size=64, required=True, index=True)
    user_type_id = fields.Many2one('account.account.type', string='Type', required=True, oldname='user_type',
        help="These types are defined according to your country. The type contains more information "\
        "about the account and its specificities.")
    reconcile = fields.Boolean(string='Allow Invoices & payments Matching', default=False,
        help="Check this option if you want the user to reconcile entries in this account.")
    note = fields.Text()
    tax_ids = fields.Many2many('account.tax.template', 'account_account_template_tax_rel', 'account_id', 'tax_id', string='Default Taxes')
    nocreate = fields.Boolean(string='Optional Create', default=False,
        help="If checked, the new chart of accounts will not contain this by default.")
    chart_template_id = fields.Many2one('account.chart.template', string='Chart Template',
        help="This optional field allow you to link an account template to a specific chart template that may differ from the one its root parent belongs to. This allow you "
            "to define chart templates that extend another and complete it with few new accounts (You don't need to define the whole structure that is common to both several times).")
    tag_ids = fields.Many2many('account.account.tag', 'account_account_template_account_tag', string='Account tag', help="Optional tags you may want to assign for custom reporting")
    @api.multi
    @api.depends('name', 'code')
    def name_get(self):