6.1 - account_invoice_force_number does not work for supplier invoices

[bruno bottacini]

nel file invoice_view.xml andrebbe aggiunto

        <record model="ir.ui.view" id="account_invoice_supplier_form_int_number">
            <field name="name">account.invoice.supplier.form.int_number</field>
            <field name="model">account.invoice</field>
            <field name="inherit_id" ref="account.invoice_supplier_form"/>
            <field name="type">form</field>
            <field name="arch" type="xml">
                <xpath expr="/form/group/field[@name='fiscal_position']" position="after">
                    <field name="internal_number" attrs="{'invisible':[('state','!=','draft')]}" string="Force Number" help="Force invoice number. Use this field if you don't want to use the default numbering"/>
                </xpath>
            </field>
        </record>

[Guewen Baconnier @ Camptocamp (gbaconnier-c2c)]

Merged Lorenzo Battistini's fix in lp:account-invoicing/6.1