No longer setting AirDate to null if it aired before series start date

This was causing an issue which is caused by bad data coming from trakt...

NzbDrone.Core/Tv/RefreshSeriesService.cs

@@ -144,8 +144,6 @@ namespace NzbDrone.Core.Tv
                     episodeToUpdate.Overview = episode.Overview;
                     episodeToUpdate.AirDate = episode.AirDate;
 
-                    if (episodeToUpdate.AirDate < series.FirstAired) episodeToUpdate.AirDate = null;
-
                     successCount++;
                 }
                 catch (Exception e)
@@ -201,7 +199,7 @@ namespace NzbDrone.Core.Tv
         /*        private void DeleteEpisodesNotAvailableAnymore(Series series, IEnumerable<Episode> onlineEpisodes)
                 {
                     //Todo: This will not work as currently implemented - what are we trying to do here?
-         *          //We were trying to remove episodes that were once on tvdb but were removed, for whatever reason, instead of polluting our DB with them.
+                    //Todo: We were trying to remove episodes that were once on tvdb but were removed, for whatever reason, instead of polluting our DB with them.
                     return;
                     _logger.Trace("Starting deletion of episodes that no longer exist in TVDB: {0}", series.Title.WithDefault(series.Id));
                     foreach (var episode in onlineEpisodes)

NzbDrone.Core/Tv/SeriesService.cs

@@ -96,7 +96,7 @@ namespace NzbDrone.Core.Tv
                 series.QualityProfileId = edited.QualityProfileId;
                 series.Monitored = edited.Monitored;
                 series.SeasonFolder = edited.SeasonFolder;
-                //series.Path = edited.Path;
+                series.Path = edited.Path;
                 series.CustomStartDate = edited.CustomStartDate;
 
                 _seriesRepository.Update(series);
@@ -109,7 +109,6 @@ namespace NzbDrone.Core.Tv
             return _seriesRepository.FindByTvdbId(tvdbId);
         }
 
-
         public Series FindBySlug(string slug)
         {
             var series = _seriesRepository.FindBySlug(slug);