Seed script creates future overdue reservations

[esoterik]

The seed script generated this reservation:

#<Reservation id: 6, reserver_id: 9, checkout_handler_id: 25, checkin_handler_id: nil, 
start_date: "2015-06-27", due_date: "2015-06-28", checked_out: "2015-06-27 04:00:00", 
checked_in: nil, created_at: "2015-05-25 15:53:17", updated_at: "2015-05-25 15:53:17", 
equipment_model_id: 2, equipment_item_id: 9, 
notes: "Tofu PBR blog photo booth raw denim iPhone hoodie ...", 
notes_unsent: true, times_renewed: nil, status: 3, overdue: true, flags: 1>

Somehow, this reservation is in the future, but has been checked out and flagged as overdue. This may or may not be related to #1229

[orenyk]

This isn't really a bug as much as a consequence of the fact that the seed script sets the overdue flag independently of the start date (see here). Nonetheless, it could probably be fixed / refactored eventually.

[orenyk]

Closed via #1567. @esoterik don't forget to link to this one in the CHANGLEOG as well.