Active Coupon Buff

Added buff icons for active coupons the player has. Fixed a minor issue,
introduced on the last commit, that prevented coupons to become active
automatically.

MapleCouponInstaller/nbproject/private/private.xml

@@ -2,6 +2,8 @@
 <project-private xmlns="http://www.netbeans.org/ns/project-private/1">
     <editor-bookmarks xmlns="http://www.netbeans.org/ns/editor-bookmarks/2" lastBookmarkId="0"/>
     <open-files xmlns="http://www.netbeans.org/ns/projectui-open-files/2">
-        <group/>
+        <group>
+            <file>file:/C:/Nexon/MapleSolaxia/MapleSolaxiaV2/MapleCouponInstaller/src/maplecouponinstaller/MapleCouponInstaller.java</file>
+        </group>
     </open-files>
 </project-private>