multi-episode grouping bugfix

ErsatzTV.Application/ProgramSchedules/Commands/UpdateProgramScheduleHandler.cs

@@ -37,9 +37,10 @@ namespace ErsatzTV.Application.ProgramSchedules.Commands
             ProgramSchedule programSchedule,
             UpdateProgramSchedule update)
         {
-            // we only need to rebuild playouts if the playback order has been modified
+            // we need to rebuild playouts if the playback order or keep multi-episodes has been modified
             bool needToRebuildPlayout =
-                programSchedule.MediaCollectionPlaybackOrder != update.MediaCollectionPlaybackOrder;
+                programSchedule.MediaCollectionPlaybackOrder != update.MediaCollectionPlaybackOrder ||
+                programSchedule.KeepMultiPartEpisodesTogether != update.KeepMultiPartEpisodesTogether;
 
             programSchedule.Name = update.Name;
             programSchedule.MediaCollectionPlaybackOrder = update.MediaCollectionPlaybackOrder;

ErsatzTV.Core/Scheduling/MultiPartEpisodeGrouper.cs

@@ -19,7 +19,7 @@ namespace ErsatzTV.Core.Scheduling
             {
                 if (item is Episode e)
                 {
-                    const string PATTERN = @"^.*\((\d+)\)$";
+                    const string PATTERN = @"^.*\((\d+)\)( - .*)?$";
                     Match match = Regex.Match(e.EpisodeMetadata.Head().Title, PATTERN);
                     if (match.Success)
                     {