History VIew Added.

Fixed Relationships between History and Episode/Indexer.
Indexer now uses int as ID, string caused issues.
Get single Indexer by ID.

NzbDrone.Core/Repository/Episode.cs

@@ -1,6 +1,5 @@
 using System;
 using System.Collections.Generic;
-using System.Web.Script.Serialization;
 using NzbDrone.Core.Model;
 using SubSonic.SqlGeneration.Schema;
 

NzbDrone.Core/Repository/History.cs

@@ -1,7 +1,4 @@
 using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
 using NzbDrone.Core.Repository.Quality;
 using SubSonic.SqlGeneration.Schema;
 
@@ -9,9 +6,10 @@ namespace NzbDrone.Core.Repository
 {
     public class History
     {
-        public int HistoryId { get; set; }
+        [SubSonicPrimaryKey(true)]
+        public virtual int HistoryId { get; set; }
         public virtual int EpisodeId { get; set; }
-        public virtual string IndexerName { get; set; }
+        public virtual int IndexerId { get; set; }
         public string NzbTitle { get; set; }
         public QualityTypes Quality { get; set; }
         public DateTime Date { get; set; }

NzbDrone.Core/Repository/Indexer.cs

@@ -10,7 +10,9 @@ namespace NzbDrone.Core.Repository
 {
     public class Indexer
     {
-        [SubSonicPrimaryKey(true)]
+        [SubSonicPrimaryKey(false)]
+        public virtual int IndexerId { get; set; }
+
         public string IndexerName { get; set; }
         public string RssUrl { get; set; }