Conserve breadcrumb if referer page is not a category page

If referer page display a product we can know category loaded and provide it and not default category
* Resolve http://forge.prestashop.com/browse/PSCFV-9021

We test category and referer pages
* A cookie is used with product page, to know what is category active
* Referer page is test with and without urldecode (to follow also accented url)
* Some test to solve https://github.com/PrestaShop/PrestaShop/pull/432