vertical-cooperative/website_recaptcha_reloaded/views/res_config.xml

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

        <record id="view_website_config_settings" model="ir.ui.view">
            <field name="name">Website settings</field>
            <field name="model">website.config.settings</field>
            <field name="inherit_id" ref="website.view_website_config_settings" />
            <field name="arch" type="xml">
                <group name="social" position="after">
                    <group string="Google reCAPTCHA Reloaded">
                        <label for="recaptcha_site_key"/>
                        <div name="recaptcha_site_key">
                            <div class="oe_inline">
                                <field name="recaptcha_site_key" placeholder="Your reCAPTCHA site key"/>
                            </div>
                        </div>
                        <label for="recaptcha_private_key"/>
                        <div name="recaptcha_private_key">
                            <div class="oe_inline">
                                <field name="recaptcha_private_key" placeholder="Your reCAPTCHA private key"/>
                            </div>
                        </div>
                    </group>
                </group>
            </field>
        </record>
    </data>
</openerp>