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/e_commerce/shopping_cart/utils.py

@@ -0,0 +1,41 @@
+# Copyright (c) 2015, Frappe Technologies Pvt. Ltd. and Contributors
+# License: GNU General Public License v3. See license.txt
+
+from __future__ import unicode_literals
+
+import frappe
+import frappe.defaults
+from erpnext.e_commerce.doctype.e_commerce_settings.e_commerce_settings import is_cart_enabled
+
+def show_cart_count():
+	if (is_cart_enabled() and
+		frappe.db.get_value("User", frappe.session.user, "user_type") == "Website User"):
+		return True
+
+	return False
+
+def set_cart_count(login_manager):
+	role, parties = check_customer_or_supplier()
+	if role == 'Supplier': return
+	if show_cart_count():
+		from erpnext.e_commerce.shopping_cart.cart import set_cart_count
+		set_cart_count()
+
+def clear_cart_count(login_manager):
+	if show_cart_count():
+		frappe.local.cookie_manager.delete_cookie("cart_count")
+
+def update_website_context(context):
+	cart_enabled = is_cart_enabled()
+	context["shopping_cart_enabled"] = cart_enabled
+
+def check_customer_or_supplier():
+	if frappe.session.user:
+		contact_name = frappe.get_value("Contact", {"email_id": frappe.session.user})
+		if contact_name:
+			contact = frappe.get_doc('Contact', contact_name)
+			for link in contact.links:
+				if link.link_doctype in ('Customer', 'Supplier'):
+					return link.link_doctype, link.link_name
+
+		return 'Customer', None