Improvement based on cms Vassop 1.70

1. The user is authorized i.e. entered the store, entered the login and password
When placing an order by an authorized user, add additional fields:
- at the step of choosing delivery, the additional field is the client's address, here the customer address (different from the address of the authorized user), the index, the city, the street house q.
immediately considered the cost of delivery to the entered address, through the already built-in in the store module of the imposed payment.
- at the step of choosing a payment, add an additional field - the price for the client
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All data from the additional fields must be stored and displayed in the appropriate fields when viewing the order in the admin, and sent to the email notification at the end of the order (this function already exists).

2. The user is authorized i.e. entered the store, entered the login and password
When entering the personal account (account.php) in the section "My orders" - it is necessary to make visible to the user comments to the order left by the manager through the admin when editing the order (this function already exists)