Implemented EllinPQ + some bug fixes

Implemented EllinPQ, adjusted several drop rates and data, fixes some
bugs at quests at client-side.

scripts/event/GuildQuest.js

@@ -190,9 +190,9 @@ function finish(eim) {
     eim.dispose();
 }
 
-function allMonstersDead(eim) {
-//do nothing; GQ has nothing to do with monster killing
-}
+function monsterKilled(mob, eim) {}
+
+function allMonstersDead(eim) {}
 
 function cancelSchedule() {
 }