Cleaned up some validation

NzbDrone.Api/Indexers/ReleaseModule.cs

@@ -40,7 +40,7 @@ namespace NzbDrone.Api.Indexers
             GetResourceAll = GetReleases;
             Post["/"] = x=> DownloadRelease(this.Bind<ReleaseResource>());
 
-            PostValidator.RuleFor(s => s.DownloadAllowed);
+            PostValidator.RuleFor(s => s.DownloadAllowed).Equal(true);
         }
 
         private Response DownloadRelease(ReleaseResource release)

NzbDrone.Core/Download/DownloadService.cs

@@ -29,7 +29,6 @@ namespace NzbDrone.Core.Download
         public void DownloadReport(RemoteEpisode remoteEpisode)
         {
             Ensure.That(() => remoteEpisode.Series).IsNotNull();
-            Ensure.That(() => remoteEpisode.Episodes).IsNotNull();
             Ensure.That(() => remoteEpisode.Episodes).HasItems();
 
             var downloadTitle = remoteEpisode.Release.Title;

NzbDrone.Core/Rest/RestSharpExtensions.cs

@@ -62,7 +62,6 @@ namespace NzbDrone.Core.Rest
             return client.Execute(request).ValidateResponse(client);
         }
 
-
         public static void AddQueryString(this IRestRequest request, string name, object value)
         {
             request.AddParameter(name, value.ToString(), ParameterType.GetOrPost);