change over more parts to the new system

CustomClasses/PlayerExtensions.cs

@@ -6,6 +6,12 @@ public static class PlayerExtensions
 {
     public static string GetExtendedClass(this Player player)
     {
+        foreach (var classManagerConfig in CustomClasses.Instance.ClassManager.Configs.Where(classManagerConfig => player.CustomInfo == classManagerConfig.Value.FullCustomInfo &&
+                     !classManagerConfig.Value.Name.IsEmpty()))
+        {
+            return classManagerConfig.Value.Name;
+        }
+
         return "";
     }
 }