2021-03-29-rework-nested-line-item-support-for-account.md

title	issue
Reworked nested line item handling for account	NEXT-14312

Storefront

• Changed nested Line Item behaviour to have a collapsable children Line Item box instead of separate, displayed items
• Added new template file platform/src/Storefront/Resources/views/storefront/page/account/order-history/order-detail-list-item-children.html.twig