Event Recall + Cash Shop bestsellers + MapleSessionCoordinator rework

Implemented an event recall system. Players that went disconnected during an event instance are able to rejoin the ongoing event upon relogin.
Implemented a player-activity backed best-sellers system for the Cash Shop.
Patched the recently added selective loot system interfering with quest items, ever disabling drops after the player picked up one item.
Implemented a server flag for everlasting buffs.
Fixed some inconsistencies with Priest Dispel skill, sometimes crashing party players.
Fixed change job not properly showing effects for other players.
Fixed wrong fee value being taken from players that expands their guild size. Also, implemented GMS-like fee for this action.
Reworked the MapleSessionCoordinator, now evaluating client's HWID as well as remote IP. This's expected to lessen account drought time for players that are constantly changing their IP.

Last but not least, added world maps for Mushroom Castle, Zipangu, CBD/Malaysia and Ellin Forest regions. Original artwork content used on files depicted in this topic are rightful property of Nexon Corps., these files thoroughly trying to adhere the "Fair Use" disclaimer policy, their purpose being solely to fulfill gaming experience for the areas that were already present on v83 GMS but still lacked worldmaps. For more info regarding Fair Use, please refer to "http://www.dmlp.org/legal-guide/fair-use".

wz/Quest.wz/Act.img.xml

@@ -55982,8 +55982,8 @@
           <int name="id" value="4000295"/>
         </imgdir>
         <imgdir name="4">
-          <int name="count" value="-30"/>
-          <int name="id" value="4001372"/>
+          <int name="count" value="-15"/>
+          <int name="id" value="4000030"/>
         </imgdir>
         <imgdir name="5">
           <int name="count" value="-10"/>

wz/Quest.wz/Check.img.xml

@@ -76673,8 +76673,8 @@
           <int name="count" value="30"/>
         </imgdir>
         <imgdir name="4">
-          <int name="count" value="30"/>
-          <int name="id" value="4001372"/>
+          <int name="count" value="15"/>
+          <int name="id" value="4000030"/>
         </imgdir>
         <imgdir name="5">
           <int name="id" value="4032475"/>

wz/Quest.wz/QuestInfo.img.xml

@@ -10317,7 +10317,7 @@ Able to proceed to 'For the peace of Victoria Island...' as next quest
     <string name="name" value="Hunter&apos;s Profission"/>
     <int name="area" value="50"/>
     <string name="0" value="Scadur seems up to something big this time. I should move to El Nath and see what he is looking for..."/>
-    <string name="1" value="So Scadur is going to set-up a &quot;Leather Festival&quot; on El Nath... I&apos;m out to find and collect all these items for him. Hope the reward of this mission is really worth it...\n\n#i4000021# #t4000021# #c4000021# / #r50#k\n#i4000264# #t4000264# #c4000264# / #r10#k\n#i4000281# #t4000281# #c4000281# / #r10#k\n#i4000295# #t4000295# #c4000295# / #r10#k\n#i4001372# #t4001372# #c4001372# / #r10#k\n#i4032475# #t4032475# #c4032475# / #r5#k"/>
+    <string name="1" value="So Scadur is going to set-up a &quot;Leather Festival&quot; on El Nath... I&apos;m out to find and collect all these items for him. Hope the reward of this mission is really worth it...\n\n#i4000021# #t4000021# #c4000021# / #r60#k\n#i4000264# #t4000264# #c4000264# / #r30#k\n#i4000281# #t4000281# #c4000281# / #r30#k\n#i4000295# #t4000295# #c4000295# / #r30#k\n#i4000030# #t4000030# #c4000030# / #r15#k\n#i4032475# #t4032475# #c4032475# / #r10#k"/>
     <string name="2" value="I helped Scadur in his &quot;Leather Festival&quot;, held on El Nath."/>
   </imgdir>
   <imgdir name="29000">

wz/Quest.wz/Say.img.xml

@@ -64772,7 +64772,7 @@
       <string name="0" value="The new hunting season has begun! I am planning to set-up a stand here at the El-Nath Market, selling #rleathers#k of the most fine quality. And for this, I am counting on you to bring all these leathers here, obviously for a #bvery nice reward#k. If you miss that season, you&apos;re not a serious hunter. It&apos;s that important. You know, I can give you a special tip on how to hunt effectively. Are you interested?"/>
       <imgdir name="yes">
         <string name="0" value="Oh hoho... Surely you do. As a hunter in training, you should get accostumed with the uncertainties that surround us. So, take this list of leathers I want you to bring, and bring them here, ok? If you pass this test, you will not regret it!"/>
-        <string name="1" value="You will need firstly regular #b#t4000021##k in a bunch of 60. In #rLeafre#k, hunt for some #b#t4000264##k. In #rMu Lung#k, hunt for some #b#t4000281##k and #b#t4000295##k, these are widely appreciated around here, and quite rare to find. In #rVictoria Island#k, hunt some #b#t4001372##k, despite their pungent smell they are quite the spice."/>
+        <string name="1" value="You will need firstly regular #b#t4000021##k in a bunch of 60. In #rLeafre#k, hunt for some #b#t4000264##k. In #rMu Lung#k, hunt for some #b#t4000281##k and #b#t4000295##k, these are widely appreciated around here, and quite rare to find. In #rVictoria Island#k, hunt some #b#t4000030##k, their tough yet flexible texture form quite the spice."/>
         <string name="2" value="Finally, #b#t4032475##k. Normally their leather are not very consistent. However, once we are in open hunt season, they have some utility for adorning things. Said all that, good luck on your hunt and be safe."/>
       </imgdir>
       <imgdir name="no">