Add a canceled at column
Scope the canceled orders
Delete orders by setting a canceled at

Then we can exclude the users that did not order
Increase the treshhold to one week

Since we can now cancel orders, and canceled orders don't count, it can
take a bit longer until a user is forgotten
A canceled order doesn't count as active
Only mail not canceled orders
Merge: Users can now cancel their order

When an order is cancelled a user will no longer show up as a
sandwichless user