* The order-details container arranges and populates the items list and the 2nd total line under the items.
* The displayItems list is rendered into 2 lists, a "footer-items" list which displays tax and similar items just before the total, and a "main" list for everything else.
* The list items are instances of a payment-details-item component
* Initial layout of the line items and total with css grid
* Tests for order-details component
* Tests for payment-detail-item component
MozReview-Commit-ID: 68r8SSgwHgq
--HG--
extra : rebase_source : 8b2287124615bd4c16ab900d1f029d02538ccf1f
a396e6b9fa