Show Automatic discounts in order detail in backoffice

[ngth-epi]

Is your feature request related to a problem? Please describe.
When having an automatic discount and finish an order, I go to backoffice to see order detail and expect subtotal discount has value and the reason why it has discount, but no information on screen.

Describe the solution you'd like
A section where it show all discounts applied to order, right now only discount codes are available.

Describe alternatives you've considered
None.

Additional context
None.

[mattbrailsford]

I'll have to double check what we record, but we'll have to try and come up with a way of displaying this as we can't just put a reason next the affected price as a) multiple discounts could apply to the same price and b) discounts can apply to multiple prices.

I think the best we could aim to achieve would be to have a section somewhere that just lists all discounts that apply, and maybe. what price and what value was affected. It'll need some thought though to figure out how best to display this, especially given we can have order line based discounts as well.

Maybe when we show a discounted price we could click it to get a summary of what makes up that discount.

Anyways, I'll have to give it some thought.