Coupons Module Update suggestions

Important *Coupons are valid for a specific time frame but you can have blackout periods such as weekdays and holidays for example: MIDWEEK10

Coupons currently do not add on the discount on the upsells, which we use a reservations add on. Would be nice for the coupon to be valid on total or on just the base rate.

Show coupon discount in invoice and be able to add into a back end booking