partner-contact/partner_nace/views/res_partner_nace_view.xml

<?xml version="1.0" encoding="utf-8"?>
<openerp>
<data>

<record id="res_partner_nace_tree" model="ir.ui.view">
    <field name="name">NACE Activities tree</field>
    <field name="model">res.partner.nace</field>
    <field name="arch" type="xml">
        <tree string="NACE Activities">
            <field name="level"/>
            <field name="code"/>
            <field name="name"/>
        </tree>
    </field>
</record>

<record id="res_partner_nace_form" model="ir.ui.view">
    <field name="name">NACE Activities tree</field>
    <field name="model">res.partner.nace</field>
    <field name="arch" type="xml">
        <form string="NACE Activity">
            <group>
                <group>
                    <field name="level"/>
                    <field name="code"/>
                </group>
            </group>
            <group>
                <field name="parent_id"/>
                <field name="name"/>
                <field name="rules"/>
                <field name="generic"/>
                <field name="central_content"/>
                <field name="limit_content"/>
                <field name="exclusions"/>
            </group>
        </form>
    </field>
</record>

<record id="res_partner_nace_action" model="ir.actions.act_window">
    <field name="name">NACE Activities</field>
    <field name="type">ir.actions.act_window</field>
    <field name="res_model">res.partner.nace</field>
    <field name="view_type">form</field>
    <field name="view_mode">tree,form</field>
    <field name="help">You must click at import wizard to populate NACE items
        in Odoo database in:
        Sales > Configuration > Address Book > Import NACE Rev.2</field>
</record>

<menuitem action="res_partner_nace_action"
          id="res_partner_nace_menu"
          name="NACE Activities"
          parent="base.menu_config_address_book"
          sequence="40"/>

</data>
</openerp>