Fixed: Don't mark releases as imported unless at least one file is imported

src/NzbDrone.Core/Parser/EpisodeNotFoundException.cs

@@ -0,0 +1,11 @@
+using NzbDrone.Common.Exceptions;
+
+namespace NzbDrone.Core.Parser
+{
+    public class EpisodeNotFoundException : NzbDroneException
+    {
+        public EpisodeNotFoundException(string message, params object[] args) : base(message, args)
+        {
+        }
+    }
+}