Concurrency fix + new scripts

Fixed some situation involving concurrency upon using getCharacters()
from MapleMap, added scripts and other bug fixes.

scripts/npc/world0/2100007.js

@@ -0,0 +1,42 @@
+/* Author: aaroncsn (MapleSea Like)(Incomplete- Needs skin id)
+	NPC Name: 		Laila
+	Map(s): 		The Burning Road: Ariant(2600000000)
+	Description: 	Skin Care Specialist
+*/
+
+var status = 0;
+var skin = Array(0, 1, 2, 3, 4);
+
+function start() {
+	status = -1;
+	action(1, 0, 0);
+}
+
+function action(mode, type, selection) {
+	if (mode == -1) {
+		cm.dispose();
+	} else {
+		if (mode == 0 && status >= 0) {
+			cm.dispose();
+			return;
+		}
+		if (mode == 1)
+			status++;
+		else
+			status--;
+		if (status == 0) {
+			cm.sendNext("Hohoh~ welcome welcome. Welcome to Ariant Skin Care. You have stepped into a renowned Skin Care shop that even the Queen herself frequents this place. If you have #bAriant skin care coupon#k with you, we'll take care of the rest. How about letting work on your skin today?");
+		} else if (status == 1) {
+			cm.sendStyle("With our specialized machine, you can see yourself after the treatment in advance. What kind of skin-treatment would you like to do? Choose the style of your liking...", skin);
+		} else if (status == 2){
+			cm.dispose();
+			if (cm.haveItem(5153007) == true){
+				cm.gainItem(5153007, -1);
+				cm.setSkin(skin[selection]);
+				cm.sendOk("Enjoy your new and improved skin!");
+			} else {
+				cm.sendNext("Hmmm... I don't think you have our Skin Care coupon with you. Without it, I can't give you the treatment");
+			}
+		}
+	}
+}