Descent 2nd ed. Classes card box

Slight resizing of the original designer's card box for the Descent class cards. I lengthened and widened the box slightly (the divider is the same size) to accommodate sleeved cards.

I also found that my printer (Makergear M2) made the lid slightly too snuggly (PLA), so I made the lid a hair larger. I found the top now slides on and off easily but still has enough friction that it won't just fall off either.