website sale refactor

addons/website/__openerp__.py

addons/website/data/data.xml

addons/website/data/demo.xml

addons/website/models/ir_http.py

addons/website/models/website.py

addons/website_event_sale/models/website.py

addons/website_event_sale/views/website_event_sale.xml

addons/website_mail/doc/changelog.rst

addons/website_mail/doc/index.rst

addons/website_partner/__openerp__.py

addons/website_partner/data/demo.xml

addons/website_sale/__openerp__.py

addons/website_sale/controllers/main.py

addons/website_sale/data/data.xml

addons/website_sale/data/demo.xml

addons/website_sale/models/__init__.py

addons/website_sale/models/payment_transaction.py

addons/website_sale/models/product.py

addons/website_sale/models/product_characteristics.py

addons/website_sale/models/sale_order.py