adds process animation while dropping an item from cart
adds Order page
adds orderForm
adds basic contactsForm validation without response to user
adds confirm button and enables it only if valid form
finishes 1st version of order page
displays only items with status AVAILABLE on main page
changes item status after buying it
adds modal window and redirect after successful buy
adds check if there are more available items to add to cart and shows response to user if not.
adds cart, buy functionality