Almost finished linking frontend to backend. A few issues with DB mapping to work out.

src/NzbDrone.Core/Exceptions/ArtistNotFoundException.cs

@@ -0,0 +1,31 @@
+using NzbDrone.Common.Exceptions;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace NzbDrone.Core.Exceptions
+{
+    public class ArtistNotFoundException : NzbDroneException
+    {
+        public int ItunesId { get; set; }
+
+        public ArtistNotFoundException(int itunesId)
+            : base(string.Format("Series with iTunesId {0} was not found, it may have been removed from iTunes.", itunesId))
+        {
+            ItunesId = itunesId;
+        }
+
+        public ArtistNotFoundException(int itunesId, string message, params object[] args)
+            : base(message, args)
+        {
+            ItunesId = itunesId;
+        }
+
+        public ArtistNotFoundException(int itunesId, string message)
+            : base(message)
+        {
+            ItunesId = itunesId;
+        }
+    }
+}