Performance improvements

1.	ProductAssociationService caching		Closed	Denis Pavlov
2.	FeaturedProducts and NewArrivals panels		Closed	Denis Pavlov
3.	Optimise AttrValueEntityProduct-AttributeEntity relation		Closed	Denis Pavlov
4.	Checkout must have simplified header/footer		Closed	Igor Azarny
5.	Increase caching timeout		Closed	Denis Pavlov
6.	Breadcrumbs generate unexpected amount of cached items		Closed	Denis Pavlov
7.	Review product indexing bridges		Closed	Denis Pavlov
8.	Improve performance on step 4 of the checkout		Closed	Denis Pavlov
9.	Searching step in stress test		Closed	Denis Pavlov
10.	Filter navigation cache should only be cleared if product goes out of stock		Closed	Denis Pavlov
11.	Review PriceServiceImpl to minimise DB access		Closed	Denis Pavlov
12.	Add additional indexes to CustomerEntity, CustomerOrderEntity, CustomerOrderPaymentEntity and PaymentGatewayParameterEntity		Closed	Denis Pavlov
13.	Review usage of SkuWarehouse		Closed	Denis Pavlov
14.	Add AddressbookFacade		Closed	Denis Pavlov
15.	Add ShippingFacade		Closed	Denis Pavlov
16.	Add OrderFacade		Closed	Denis Pavlov
17.	Create storefront warmup service that preloads some of long term caches		Closed	Denis Pavlov
18.	Review ehcache configuration		Closed	Denis Pavlov
19.	Rework mail delivery		Closed	Denis Pavlov
20.	Add CustomerServiceFacade for managing customer profile updates, login and customer information retireval		Closed	Denis Pavlov