chore: Removed Shopping Cart Module

- Moved all files and web templates from Shopping Cart to E-commerce module
- Made Shopping Cart module obsolete
- Moved select E-commerce related files from Portal to E-commerce module
- Minor cleanups
- Fixed Shopping Cart and Product Configurator tests

erpnext/public/js/conf.js

@@ -21,6 +21,6 @@ $.extend(frappe.breadcrumbs.module_map, {
 	'Geo': 'Settings',
 	'Portal': 'Website',
 	'Utilities': 'Settings',
-	'Shopping Cart': 'Website',
+	'E-commerce': 'Website',
 	'Contacts': 'CRM'
 });