website sale refactor
[MERGE] from trunk
[MERGE] from trunk
[IMP] website_sale: some fix and imp
[FIX] website_sale: int(category)
[IMP] website_sale: checkout_values, checkout_parse and checkout_form_validate
[IMP] website_sale: fixed and refactored until shop/payment
[IMP] website_sale: refactoring: website_event_sale: fix for refactoring
[REM] website_event_sale: remove sale_order.py
[MERGE] from trunk
[FIX] website_sale: import test_ui
[MERGE] from trunk
[FIX] website_sale: checkout shipping address; remove url terminal slash
[FIX] website_sale: checkout prefix
[MERGE] from trunk
[FIX] website_sale: checkout_parse
[MERGE] from trunk
[IMP] website_sale: create new shipping address; company_name field; fix acquierer image
[FIX] website_sale: apply tax
[FIX] website_sale: apply fiscal position on change product id and update cart.
[IMP] sale: apply fiscal position of the partner if they are not fiscal position defined