base_user_role/views/user.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright 2014 ABF OSIELL <http://osiell.com>
     License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl). -->
<openerp>
    <data>

        <record id="view_res_users_form_inherit" model="ir.ui.view">
            <field name="name">res.users.form.inherit</field>
            <field name="model">res.users</field>
            <field name="inherit_id" ref="base.view_users_form"/>
            <field name="arch" type="xml">
                <notebook position="inside">
                    <page string="Roles">
                        <field name="role_line_ids" nolabel="1">
                            <tree editable="bottom" colors="grey: not is_enabled;">
                                <field name="role_id"/>
                                <field name="date_from"/>
                                <field name="date_to"/>
                                <field name="is_enabled"/>
                            </tree>
                        </field>
                    </page>
                </notebook>
            </field>
        </record>

        <record id="view_res_users_search_inherit" model="ir.ui.view">
            <field name="name">res.users.search.inherit</field>
            <field name="model">res.users</field>
            <field name="inherit_id" ref="base.view_users_search"/>
            <field name="arch" type="xml">
                <field name="company_ids" position="after">
                    <field name="role_ids"/>
                </field>
            </field>
        </record>

    </data>
</openerp>