New PQ: Boss Rush PQ + Ellin/PiratePQ bug fixes

Introducing Boss Rush PQ. Corrected a few issues regarding rewardings in
PiratePQ and EllinPQ and implemented a standardized way to script PQs.

wz/Quest.wz/Act.img.xml

@@ -39069,8 +39069,8 @@
     <imgdir name="1">
       <imgdir name="item">
         <imgdir name="0">
-          <int name="id" value="4000257"/>
-          <int name="count" value="-50"/>
+          <int name="id" value="4032474"/>
+          <int name="count" value="-5"/>
         </imgdir>
         <imgdir name="1">
           <int name="id" value="4000046"/>

wz/Quest.wz/Check.img.xml

@@ -62702,8 +62702,8 @@
       <int name="npc" value="2041017"/>
       <imgdir name="item">
         <imgdir name="0">
-          <int name="id" value="4000257"/>
-          <int name="count" value="50"/>
+          <int name="id" value="4032474"/>
+          <int name="count" value="5"/>
         </imgdir>
         <imgdir name="1">
           <int name="id" value="4000046"/>