Party Search + Conditional Buffs

Revised skillbook drops. New drop chances are related to the holder's level and boss flag.
Adjusted party bonus EXP gains. The level difference calculation now only takes into account party members that participated in the action.
Implemented Party Search in the source.
Refactored command classes initialization to take place when booting up the server.
Implemented support for conditional buffs (e.g. card buffs that takes place only in certain areas).
Implemented topological sorting when updating buffs to the player, this allows a better vision of buff streaks to the player (buff-applying the original way assumes stat override client-side, to circumvent that this algorithm makes up for the best-fit scenario).
Fixed Arans not taking Dojo's attack speed buff properly.
Fixed pets being improperly removed from the DB after performing certain inventory actions.

wz/Quest.wz/QuestInfo.img.xml

@@ -2541,7 +2541,7 @@
     <string name="name" value="Mai&apos;s Last Training"/>
     <string name="parent" value="Mai&apos;s Training!"/>
     <int name="order" value="4"/>
-    <string name="1" value="I defeated the Slimes and brought back the Squishy Liquid to Mai. She seemed to be impressed, and instructed me this time to hunt a really powerful monster. She then told me to hunt #r2 Orange Mushrooms#k.\n\nOrange Mushroom #r#a10441##k"/>
+    <string name="1" value="I defeated the Slimes and brought back the Squishy Liquid to Mai. She seemed to be impressed, and instructed me this time to hunt a really powerful monster. She then told me to hunt #r2 Orange Mushrooms#k from inside the #bTraining Center#k.\n\nOrange Mushroom #r#a10441##k"/>
     <string name="2" value="I was able to defeat 2 Orange Mushrooms and reported the result to Mai."/>
     <int name="area" value="20"/>
   </imgdir>

wz/Quest.wz/Say.img.xml

@@ -4503,7 +4503,7 @@
     <imgdir name="0">
       <string name="0" value="Oh wow! You really brought me Squishy Liquid from the Slime. You&apos;re doing much better than I expected. I think... you&apos;re now ready to take on a really challenging monster."/>
       <imgdir name="yes">
-        <string name="0" value="So, reports of late shows up a growth on masses of Orange Mushrooms around. Your job, as an aspiring Explorer, is to help us cutting out #r2 Orange Mushrooms#k. They are pretty tough and powerful, but don&apos;t take so much fear from this fact! If you trust in your abilities and focus on the combat, you should be able to handle those two handily."/>
+        <string name="0" value="So, reports of late shows up a growth on masses of Orange Mushrooms around the #bTraining Center#k. Your job, as an aspiring Explorer, is to help us cutting out #r2 Orange Mushrooms#k from there. They are pretty tough and powerful, but don&apos;t take so much fear from this fact! If you trust in your abilities and focus on the combat, you should be able to handle those two handily."/>
       </imgdir>
       <imgdir name="no">
         <string name="0" value="Hmmm... did I really scare you? Don&apos;t worry. If you are persistent, you&apos;ll be able to handle those two. I won&apos;t make you hunt monsters that you can&apos;t handle, you know."/>

wz/String.wz/Consume.img.xml

@@ -5978,10 +5978,6 @@
   <imgdir name="2388027">
     <string name="name" value="Rudolph Card"/>
     <string name="desc" value="A card that features Santa&apos;s favorite, Rudolph."/>
-    <imgdir name="2390001">
-      <string name="name" value="Helena&apos;s Marble"/>
-      <string name="desc" value="A marble given by Helena. Use this to communicate with her regardless of the place. This item is good for one-time use only..."/>
-    </imgdir>
   </imgdir>
   <imgdir name="2388028">
     <string name="name" value="Kid Snowman Card"/>