Disable creative mode item selection by default

Also added a short warning for possible exploits

src/main/resources/config.yml

@@ -25,7 +25,8 @@ confirm-shopping: false
 
 # Set whether players should be able to select the shop item from the
 # creative inventory if they don't hold an item in their hand.
-creative-select-item: true
+# !! This feature may be exploitable, players could get access to creative mode!
+creative-select-item: false
 
 # Set whether the (current) shop creation price should be refunded
 # when the shop is removed by its creator.