- Add /mute & /unmute

- Add /i
- Don't clear inv when there are no items to add

src/de/anura/core/API/Inventories.java

@@ -223,7 +223,9 @@ public class Inventories implements Listener {
     }
 
     public static void addInvItems(Player P) {
-        P.getInventory().clear();
+        if (!itemPositions.isEmpty()) {
+            P.getInventory().clear();
+        }
         for (Entry<String, Integer> item : itemPositions.entrySet()) {
             P.getInventory().setItem(item.getValue(), getItem(item.getKey(), P));
         }