PIN system + player ranking fix + rebalanced equip EXP calculations

Added the PIN feature. Fixed ranking now calculating ranks now
world-based instead of overall. Rebalanced equip exp gain and made
cosmetic equipments no more leveling up (cosmetics leveling up are
useless).

wz/Mob.wz/8830000.img.xml

@@ -48,6 +48,9 @@
     <imgdir name="speak">
       <int name="chatBalloon" value="1"/>
     </imgdir>
+    <int name="hpTagColor" value="1"/>
+    <int name="hpTagBgcolor" value="5"/>
+    <int name="HPgaugeHide" value="1"/>
   </imgdir>
   <imgdir name="stand">
     <canvas name="0" width="827" height="561">