Fix a dList-related error

Also add JavaDocs for TagManager.CleanOutput
and a minor code correctly for dItem.

src/main/java/net/aufdemrand/denizen/objects/dItem.java

@@ -663,10 +663,8 @@ public String getAttribute(Attribute attribute) {
         // Returns whether the item has a custom set display name.
         // -->
         if (attribute.startsWith("has_display")) {
-            if (ItemDisplayname.describes(this))
-                return Element.TRUE.getAttribute(attribute.fulfill(1));
-            else
-                return Element.FALSE.getAttribute(attribute.fulfill(1));
+            return new Element(ItemDisplayname.describes(this))
+                    .getAttribute(attribute.fulfill(1));
         }
 
         // <--[tag]

src/main/java/net/aufdemrand/denizen/objects/dList.java

@@ -210,7 +210,8 @@ public List<dObject> filter(Class<? extends dObject> dClass, ScriptEntry entry)
                 if (ObjectFetcher.checkMatch(dClass, element)) {
 
                     dObject object = ObjectFetcher.getObjectFrom(dClass, element,
-                                        entry.getPlayer(), entry.getNPC());
+                            (entry != null ? entry.getPlayer(): null),
+                            (entry != null ? entry.getNPC(): null));
 
                     // Only add the object if it is not null, thus filtering useless
                     // list items

src/main/java/net/aufdemrand/denizen/tags/TagManager.java

@@ -59,11 +59,28 @@ public void registerCoreTags() {
     // 0x05: |
     // 0x2011: ;
 
+    /**
+     * Cleans escaped symbols generated within Tag Manager so that
+     * they can be parsed now.
+     *
+     * @param input the potentially escaped input string.
+     * @return the cleaned output string.
+     */
     public static String CleanOutput(String input) {
         return input.replace((char)0x01, '<').replace((char)0x02, '>')
                 /*.replace((char)0x2011, ';')*/.replace(dList.internal_escape_char, '|');
     }
 
+    /**
+     * Cleans any potential internal escape characters (secret characters
+     * used to hold the place of symbols that might get parsed weirdly
+     * like > or | ) back into their proper form. Use this function
+     * when outputting information that is going to be read by a
+     * person.
+     *
+     * @param input the potentially escaped input string.
+     * @return the cleaned output string.
+     */
     public static String CleanOutputFully(String input) {
         return input.replace((char)0x01, '<').replace((char)0x02, '>')
                 .replace((char)0x2011, ';').replace(dList.internal_escape_char, '|');