Improved item & drop-point checking + Dojo fixes + Duey revamp

Fixed some issues with items being dropped sometimes out-of-reach and in a weird way.
Improved item checking function, now looking up one-of-a-kind items properly.
Fixed some issues with dojo skills and possible exploits in dojo progression.
Improved Duey, now displaying better info to players.

scripts/quest/21618.js

@@ -64,7 +64,7 @@ function end(mode, type, selection) {
             status--;
         
         if (status == 0) {
-            if(qm.getPlayer().getItemQuantity(1902017, false) == 0) {
+            if(!qm.haveItemWithId(1902017, false)) {
                 qm.sendNext("You will have to unequip the wolf first before going for the evolution.");
                 qm.dispose();
                 return;