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).

src/server/MapleItemInformationProvider.java

@@ -1295,6 +1295,16 @@ public class MapleItemInformationProvider {
         return itemId / 1000000 == 5 || getEquipStats(itemId).get("cash") == 1;
     }
     
+    public boolean isUpgradeable(int itemId) {
+        Item it = this.getEquipById(itemId);
+        Equip eq = (Equip)it;
+        
+        return (eq.getUpgradeSlots() > 0 || eq.getStr() > 0 || eq.getDex() > 0 || eq.getInt() > 0 || eq.getLuk() > 0 ||
+                eq.getWatk() > 0 || eq.getMatk() > 0 || eq.getWdef() > 0 || eq.getMdef() > 0 || eq.getAcc() > 0 ||
+                eq.getAvoid() > 0 || eq.getSpeed() > 0 || eq.getJump() > 0 || eq.getHp() > 0 || eq.getMp() > 0);
+    }
+    
+    
     public boolean isRateCoupon(int itemId) {
         int itemType = itemId / 1000;
         return itemType == 5211 || itemType == 5360;

src/server/MapleStatEffect.java

@@ -677,6 +677,10 @@ public class MapleStatEffect {
         
         if (primary) {
             if (itemConNo != 0) {
+                if(!applyto.getClient().getAbstractPlayerInteraction().hasItem(itemCon, itemConNo)) {
+                    applyto.getClient().announce(MaplePacketCreator.enableActions());
+                    return false;
+                }
                 MapleInventoryManipulator.removeById(applyto.getClient(), MapleItemInformationProvider.getInstance().getInventoryType(itemCon), itemCon, itemConNo, false, true);
             }
         }

src/server/events/BalrogPQ.java

@@ -62,10 +62,10 @@ public class BalrogPQ {
         public void run(){
                 if(fmap.getCharacters().size() <= 3){
                     if(fmap.getCharacters().size() > 0){
-                    for(MapleCharacter chrs : fmap.getCharacters()){
-                        chrs.message("[The Order]: What? You're down to that many mercenaries? I need you get you out of there.");
-                        chrs.changeMap(105100100);
-                    }
+                        for(MapleCharacter chrs : fmap.getCharacters()){
+                            chrs.message("[The Order]: What? You're down to that many mercenaries? I need to get you out of there.");
+                            chrs.changeMap(105100100);
+                        }
                     }
                     fmap.killAllMonsters();
                     close();