Allow deleting offline player's vaults.

Not sure why this was restricted to online players.

src/main/java/com/drtshock/playervaults/commands/DeleteCommand.java

@@ -4,6 +4,7 @@ import com.drtshock.playervaults.util.Lang;
 import com.drtshock.playervaults.vaultmanagement.VaultOperations;
 import org.bukkit.Bukkit;
 import org.bukkit.ChatColor;
+import org.bukkit.OfflinePlayer;
 import org.bukkit.command.Command;
 import org.bukkit.command.CommandExecutor;
 import org.bukkit.command.CommandSender;
@@ -26,8 +27,8 @@ public class DeleteCommand implements CommandExecutor {
                 }
                 break;
             case 2:
-                Player player = Bukkit.getPlayer(args[0]);
-                if (player == null) {
+                OfflinePlayer player = Bukkit.getOfflinePlayer(args[0]);
+                if (player == null || !player.hasPlayedBefore()) {
                     sender.sendMessage(Lang.TITLE.toString() + Lang.NO_PLAYER_FOUND.toString().replaceAll("%p", args[0]));
                     break;
                 }

src/main/java/com/drtshock/playervaults/vaultmanagement/VaultOperations.java

@@ -241,7 +241,7 @@ public class VaultOperations {
      * @param holder The user to whom the deleted vault belongs.
      * @param arg    The vault number to delete.
      */
-    public static void deleteOtherVault(CommandSender sender, Player holder, String arg) {
+    public static void deleteOtherVault(CommandSender sender, OfflinePlayer holder, String arg) {
         if (isLocked()) {
             return;
         }