Added support for stopping (offencive) positions.
{PotionEffectType.POISON, PotionEffectType.WITHER, PotionEffectType.BLINDNESS, PotionEffectType.CONFUSION, PotionEffectType.HUNGER, PotionEffectType.SLOW, PotionEffectType.SLOW_DIGGING, PotionEffectType.UNLUCK, PotionEffectType.WEAKNESS} will be blocked when a player is not in PVP.