Add "Production" and "TV" episode orders.

MediaBrowser.Providers/Plugins/Tmdb/TmdbClientManager.cs

@@ -148,8 +148,10 @@ namespace MediaBrowser.Providers.Plugins.Tmdb
         private async Task<TvGroupCollection> GetSeriesGroupAsync(int tvShowId, string displayOrder, string language, string imageLanguages, CancellationToken cancellationToken)
         {
             TvGroupType? groupType =
+                string.Equals(displayOrder, "production", StringComparison.Ordinal) ? TvGroupType.Production :
                 string.Equals(displayOrder, "absolute", StringComparison.Ordinal) ? TvGroupType.Absolute :
                 string.Equals(displayOrder, "dvd", StringComparison.Ordinal) ? TvGroupType.DVD :
+                string.Equals(displayOrder, "tv", StringComparison.Ordinal) ? TvGroupType.TV :
                 null;
 
             if (groupType == null)