Create delegates to go with attack types

[EvanKnowles]

Mostly to get rid of the boring

    if (item.getDamageType() == EDamageType.SPLASH_ATTACK) {
        useSplashAttackItem(update, fighterDAO, fighter, item);
        return pendingResponse.complete();
    }
    if (item.getDamageType() == EDamageType.ATTACK_ALL) {
        useAttackAllItem(update, fighterDAO, fighter, item);
        return pendingResponse.complete();
    }