Fix Name and ID cannot be both blank

SpigotCore_14/src/de/steamwar/core/FlatteningWrapper14.java

@@ -289,7 +289,7 @@ public class FlatteningWrapper14 implements FlatteningWrapper.IFlatteningWrapper
         ItemStack head = new ItemStack(Material.PLAYER_HEAD, 1);
         SkullMeta headmeta = (SkullMeta) head.getItemMeta();
         assert headmeta != null;
-        headmeta.setOwningPlayer(Bukkit.getOfflinePlayer(player));
+        headmeta.setOwningPlayer(Bukkit.getOfflinePlayer(player.startsWith(".") ? player.substring(1) : player));
         headmeta.setDisplayName(player);
         head.setItemMeta(headmeta);
         return head;