Added option to disable blacklisting, both the queue check and the spec

src/NzbDrone.Core/DecisionEngine/Specifications/BlacklistSpecification.cs

@@ -1,6 +1,7 @@
 using System.Linq;
 using NLog;
 using NzbDrone.Core.Blacklisting;
+using NzbDrone.Core.Configuration;
 using NzbDrone.Core.IndexerSearch.Definitions;
 using NzbDrone.Core.Parser.Model;
 
@@ -9,11 +10,13 @@ namespace NzbDrone.Core.DecisionEngine.Specifications
     public class BlacklistSpecification : IDecisionEngineSpecification
     {
         private readonly IBlacklistService _blacklistService;
+        private readonly IConfigService _configService;
         private readonly Logger _logger;
 
-        public BlacklistSpecification(IBlacklistService blacklistService, Logger logger)
+        public BlacklistSpecification(IBlacklistService blacklistService, IConfigService configService, Logger logger)
         {
             _blacklistService = blacklistService;
+            _configService = configService;
             _logger = logger;
         }
 
@@ -27,9 +30,15 @@ namespace NzbDrone.Core.DecisionEngine.Specifications
 
         public virtual bool IsSatisfiedBy(RemoteEpisode subject, SearchCriteriaBase searchCriteria)
         {
+            if (!_configService.EnableFailedDownloadHandling)
+            {
+                _logger.Trace("Failed Download Handling is not enabled");
+                return true;
+            }
+
             if (_blacklistService.Blacklisted(subject.Release.Title))
             {
-                _logger.Trace("Release is blacklisted");
+                _logger.Trace("{0} is blacklisted", subject.Release.Title);
                 return false;
             }