Fix cart line key equality test.
Add coupons implementation in Cart and Order
Merge pull request #875 from inthause/documents

Add coupons implementation in Cart and Order
Fix 'rbsCartFilterDefinitions' angular admin directive
Add FreeShippingFee admin configuration
Add Rbs_Catalog_ProductAddedToCart block and function.
Add a popin confirmation after adding a product to cart.
Fix comments, code formatting and makup.
Add new propertry "labelId" in admin routes to activate the label replacement in the breadcrumb.
Add example of cart filters
PHP Code Template Update