Added the ability to access offline players & more reverse lookup fixes in Permissible.

src/main/java/org/bukkit/entity/Player.java

@@ -9,13 +9,14 @@ import org.bukkit.Material;
 import org.bukkit.Note;
 import org.bukkit.OfflinePlayer;
 import org.bukkit.Statistic;
+import org.bukkit.command.CommandSender;
 import org.bukkit.map.MapView;
 
 /**
  * Represents a player, connected or not
  *
  */
-public interface Player extends HumanEntity, OfflinePlayer {
+public interface Player extends HumanEntity, CommandSender, OfflinePlayer {
     /**
      * Gets the "friendly" name to display of this player. This may include color.
      *