feat: Slashed Prices and Discount display

- Registered mrp and price after discounts
- slashed price with discount in listing, item page and wishlist
- removed redundant imports
- renamed method to `get_web_item_qty_in_stock` to get Website Item stock
- adjusted styles for resizing
- made add to cart button full width on cards

erpnext/templates/pages/wishlist.html

@@ -7,7 +7,7 @@
 {% block page_content %}
 {% if items %}
 	<div class="row">
-		<div class="col-12 col-md-11 item-card-group-section">
+		<div class="col-md-12 item-card-group-section">
 			<div class="row products-list">
 					{% from "erpnext/templates/includes/macros.html" import wishlist_card %}
 					{% for item in items %}

erpnext/templates/pages/wishlist.py

@@ -5,26 +5,45 @@ from __future__ import unicode_literals
 no_cache = 1
 
 import frappe
+from erpnext.utilities.product import get_price
+from erpnext.e_commerce.shopping_cart.cart import _set_price_list
 
 def get_context(context):
 	settings = frappe.get_doc("E Commerce Settings")
 	items = get_wishlist_items()
+	selling_price_list = _set_price_list(settings)
 
-	if settings.show_stock_availability:
-		for item in items:
-			stock_qty = frappe.utils.flt(
-				frappe.db.get_value("Bin",
-					{
-						"item_code": item.item_code,
-						"warehouse": item.get("warehouse")
-					},
-					"actual_qty")
-			)
-			item.available = True if stock_qty else False
+	for item in items:
+		if settings.show_stock_availability:
+			item.available = get_stock_availability(item.item_code, item.get("warehouse"))
+
+		price_details = get_price(
+			item.item_code,
+			selling_price_list,
+			settings.default_customer_group,
+			settings.company
+		)
+
+		if price_details:
+			item.formatted_mrp = price_details.get('formatted_mrp')
+			if item.formatted_mrp:
+				item.discount = price_details.get('formatted_discount_percent') or \
+					price_details.get('formatted_discount_rate')
 
 	context.items = items
 	context.settings = settings
 
+def get_stock_availability(item_code, warehouse):
+	stock_qty = frappe.utils.flt(
+		frappe.db.get_value("Bin",
+			{
+				"item_code": item_code,
+				"warehouse": warehouse
+			},
+			"actual_qty")
+	)
+	return True if stock_qty else False
+
 def get_wishlist_items():
 	if frappe.db.exists("Wishlist", frappe.session.user):
 		return frappe.db.sql("""