Minor tweak on Exp system + Diet's Cygnus quest line

Changed minimum level required to gain EXP of mob from -5 to -20 the mob level (players below that level sees a red-colored font when displaying higher-leveled mob HPbar). Thanks to DietStory dev team, fixed some quests for KoC.

scripts/portal/outMagiclib.js

@@ -0,0 +1,19 @@
+function enter(pi) {
+	if(pi.getMap().countMonster(2220100) > 0){
+		pi.getPlayer().message("Cannot leave until all Blue Mushrooms have been defeated.");
+		return false;
+	}
+	else{
+		var eim = pi.getEventInstance();
+		eim.stopEventTimer();
+		eim.dispose();
+	
+		pi.playPortalSound();
+		pi.warp(101000000, 26);
+
+		if(pi.isQuestCompleted(20718))
+			pi.openNpc(1103003, "MaybeItsGrendel_end");
+		
+		return true;
+	}
+}