Product page and enquiry improvements

Concrete changes to the product page and the enquiry, aimed at removing steps for the buyer. Each one is tested before publishing and can be switched off.

What it includes

A WhatsApp button on the product page, with the product, code and link already written.
A quantity price calculator, using the discounts you already have.
Delivery estimate and campaign notices on the product page.
A quote list and a preview of the customer's logo on the product.