remove special characters from sort names

MediaBrowser.Controller/Entities/BaseItem.cs

@@ -603,7 +603,7 @@ namespace MediaBrowser.Controller.Entities
                 builder.Append(chunkBuilder);
             }
             //Logger.Debug("ModifySortChunks Start: {0} End: {1}", name, builder.ToString());
-            return builder.ToString();
+            return builder.ToString().RemoveDiacritics();
         }
 
         [IgnoreDataMember]