* initial code push
* update metadata and only merge if the existing line item allows merging
* update should_merge check
* undo changes to taxrate service
* update results with unit pricing corresponding to the db values after update
* add should_merge property to line_item creation
* add should_merge property to line_item creation
* fix unit tests
* undo adding "should_merge" to create-line-item
* undo change to "addOrUpdateLineItem"
* :wqh_merge from generate method
* undo changes to unit tests
* revert to adding pricing in updateLineItem method
* update cart service test
* Create funny-radios-juggle.md
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Co-authored-by: Oli Juhl <59018053+olivermrbl@users.noreply.github.com>
Fix for the problems identified in issue #4892
Bugfix: admin-ui order summary no longer uses gift card total from order when displaying how much has been withdrawn from each giftcard.
Bugfix(?): no longer keep applying gift cards (at 0 value) when sufficient balance has been reached
Feature: multiple giftcards are now applied in ordered fashion. First by end_date (supports null), then by remaining balance. In order to ensure that customers ends up with as long lasting and few remaining gift cards as possible after the transaction.
