Fixed bugs with song management

Controllers/Managers/CoverArtManager.cs

@@ -47,6 +47,7 @@ public class CoverArtManager : BaseManager
     {
         _logger.Info("Attempting to delete cover art from the database");
 
+        _coverArtContext.Attach(coverArt);
         _coverArtContext.Remove(coverArt);
         _coverArtContext.SaveChanges();
     }

Controllers/Managers/SongManager.cs

@@ -158,8 +158,8 @@ public class SongManager : BaseManager
             var coverArt = coverMgr.GetCoverArt(song);
             coverMgr.DeleteCoverArt(coverArt);
 
-            coverMgr.DeleteCoverArtFromDatabase(coverArt);
             DeleteSongFromDatabase(song);
+            coverMgr.DeleteCoverArtFromDatabase(coverArt);
         }
         catch (Exception ex)
         {

Controllers/v1/SongDataController.cs

@@ -148,7 +148,7 @@ public class SongDataController : BaseController
 
             _songMgr.DeleteSong(songMetaData);
 
-            return Ok();
+            return Ok(songMetaData);
         }
 
     }

Models/CoverArt.cs

@@ -17,12 +17,6 @@ public class CoverArt
     public string SongTitle { get; set; }
     [JsonIgnore]
     public string ImagePath { get; set; }
-    [JsonIgnore]
-    [NotMapped]
-    public int SongID { get; set; }
-    [JsonIgnore]
-    [NotMapped]
-    public List<Song> Songs { get; set; }
     #endregion