Added "exclude" parameter to form_hidden_field
Added "product" parameter
Merge branch 'master' into sales
Added `new`, `promo` and `default` params to `product_sale_element` loop
add order_product_tax.md
add declaration
Merge pull request #79 from zzuutt/add-loop-OrderProductTax

add order_product_tax.md
Merge pull request #78 from roadster31/sales

Finished sales documentation
add order argument to delivery and payment module
Added doc related to virtual products
fixed unwanted changes
Merge pull request #81 from bibich/improvements

Loop arguments related to virtual products
Merge branch 'master' of https://github.com/thelia/thelia.github.io
update api documentation
Merge pull request #82 from lunika/update-api

Update api documentation