<?xml version='1.0' encoding='UTF-8'?>
<odoo>

        <record id="view_workalendar_holiday_import" model="ir.ui.view">
            <field name="name">Import Holidays</field>
            <field name="model">wizard.workalendar.holiday.import</field>
            <field name="arch" type="xml">
                <form string="Import Brazilian Holidays">
                    <div class="oe_title">
                        <label string="Import Public Holidays from"/>
                        <field name="start_date" class="oe_inline" readonly="0"/>
                        <label string="until"/>
                        <field name="end_date" class="oe_inline" readonly="1"/>
                    </div>
                    <group>
                        <group string="Interval">
                            <field name="interval_type" />
                            <field name="interval_number" />
                        </group>
                    </group>
                    <footer>
                        <button name="holiday_import" string="Import" type="object" class="oe_highlight"/>
                        or
                        <button string="Cancel" class="oe_link" special="cancel" />
                    </footer>
                </form>
            </field>
        </record>

</odoo>

<?xml version='1.0' encoding='UTF-8'?>
<odoo>

        <record id="view_workalendar_holiday_import" model="ir.ui.view">
            <field name="name">Import Holidays</field>
            <field name="model">wizard.workalendar.holiday.import</field>
            <field name="arch" type="xml">
                <form string="Import Brazilian Holidays">
                    <div class="oe_title">
                        <label string="Import Public Holidays from" for="start_date"/>
                        <field name="start_date" class="oe_inline" readonly="0"/>
                        <label string="until" for="end_date"/>
                        <field name="end_date" class="oe_inline" readonly="1"/>
                    </div>
                    <group>
                        <group string="Interval">
                            <field name="interval_type" />
                            <field name="interval_number" />
                        </group>
                    </group>
                    <footer>
                        <button name="holiday_import" string="Import" type="object" class="oe_highlight"/>
                        or
                        <button string="Cancel" class="oe_link" special="cancel" />
                    </footer>
                </form>
            </field>
        </record>

</odoo>

Add 'for' attribute on <label> elements
[12.0][MIG] Add 'for' attribute on <label> elements
