Add commerce WEB API

Conflicts:
	Plugins/Modules/Rbs/Commerce/Assets/Theme/js/cart.js
	Plugins/Modules/Rbs/Commerce/Assets/Twig/Blocks/order-process/shipping.twig
	Plugins/Modules/Rbs/Geo/GeoManager.php
Add commerce WEB API
Code formatting, comments and minor enhancements.
Extract rbsCatalogVariantSelector directive from RbsCatalogVariantProductController.
Add an getProductAxesData method in ProductManager.
Minor fixes and enhancements.
Fixes and refactoring in product return creation form.