Use DownloadClientIds to find matching series/episodes instead of relying solely on release name

Fixed: Show a warning in Queue when drone is unable to import due to a name mismatch
Fixed: Better UI messages for Queue when there is an error or warning

src/NzbDrone.Core/Download/DownloadClientItem.cs

@@ -1,5 +1,4 @@
-using NzbDrone.Core.Parser.Model;
-using System;
+using System;
 
 namespace NzbDrone.Core.Download
 {
@@ -21,7 +20,5 @@ namespace NzbDrone.Core.Download
         public DownloadItemStatus Status { get; set; }
         public Boolean IsEncrypted { get; set; }
         public Boolean IsReadOnly { get; set; }
-
-        public RemoteEpisode RemoteEpisode { get; set; }
     }
 }