* Follow up 462b2be, wrong check for itemdb_isstackable(). Thank Napster
* Follow up 171e2f2, added battle config 'at_monsterignore' at conf/battle/misc.conf to makes autotrader cannot be attacked. Thank @Lemongrass3110

Signed-off-by: Cydh Ramdh <house.bad@gmail.com>