[IMP] website: connect with search google easily

You need to provide a small part of the code, because to avoid fraud, google
make several request to be sure that you don't allow all codes :)

So the 'WPS' solution was dropped, now we take the first request from google
that match the part provided, as the good one, and refuse all others requests.

task-2086915

closes odoo/odoo#39186

Signed-off-by: Jérémy Kersten (jke) <jke@openerp.com>