Fix commenting 500 from blackjack.py.

Apparently the blackjack code didn't have the global constants.
And was breaking everything when checking `FEATURES`.

files/helpers/blackjack.py

@@ -1,6 +1,7 @@
 from json.encoder import INFINITY
 import random
 from math import floor
+from files.helpers.const import *
 
 deck_count = 4
 ranks = ("2", "3", "4", "5", "6", "7", "8", "9", "X", "J", "Q", "K", "A")