Add popup for shipping/pickup choice

[asvishnyakov]

• Add "Ship or pickup" link
• Change link text to display current postal code or pickup location name (number) when use logged in
• Open popup with shipping / pickup choice when click on "Ship or pickup" link
• If shipping selected: show input for postal code and pass this postal code to current user address
• If pick up selected: show link to fulfillment center selection. Then fulfillment center selected, pass its address to shipping method

Research:

• Have user "current selected" address? How to get it?
• Should/can we pass fulfillment center ID to shipment method?

[asvishnyakov]

Research results:

• Use defaultShippingAddress
• Do not pass fulfillment center ID (not needed)
• When add user postal code to address, fill address with 'N/A', 'None' or something like

[asvishnyakov]