Quick fix-up + Happyville

Fixed bug introduced on last update regarding events without
event_schedule defined. Added path to Happyville maps, and raid boss
event.

src/server/MapleItemInformationProvider.java

@@ -321,6 +321,28 @@ public class MapleItemInformationProvider {
         }
         return ret;
     }
+    
+    public List<Integer> getItemIdsInRange(int minId, int maxId, boolean ignoreCashItem) {
+        List<Integer> list = new ArrayList<>();
+        
+        if(ignoreCashItem) {
+            for(int i = minId; i <= maxId; i++) {
+                if(getItemData(i) != null && !isCash(i)) {
+                    list.add(i);
+                }
+            }
+        }
+        else {
+            for(int i = minId; i <= maxId; i++) {
+                if(getItemData(i) != null) {
+                    list.add(i);
+                }
+            }
+        }
+        
+        
+        return list;
+    }
 
     public short getSlotMax(MapleClient c, int itemId) {
         if (slotMaxCache.containsKey(itemId)) {