Update available 3.1.11

[GMAmelia]

Update available 3.1.11

- Instead of level 1-5 cards, Dragon Dust now drops from boxes.

 - Updated prices for gold premium systems.
All premium systems are now the same and the price depends only on the number of days. 

 - Bronze and Silver Premium Systems have been removed from the Item Mall.

 - Now the Soulsmith Julie can exchange cards for dust 10 pieces at a time.