Completely overhauled how import exclusions work.

Currently new exclusions can only be added when adding new movies or deleting old ones. Not manually in the settings menu.
Movies can now be hidden in the new discover feature by using the new import exclusions!

src/NzbDrone.Api/NetImport/ImportExclusionsModule.cs

@@ -0,0 +1,45 @@
+using System.Collections.Generic;
+using FluentValidation;
+using NzbDrone.Api.ClientSchema;
+using NzbDrone.Core.NetImport;
+using NzbDrone.Core.NetImport.ImportExclusions;
+using NzbDrone.Core.Validation.Paths;
+
+namespace NzbDrone.Api.NetImport
+{
+    public class ImportExclusionsModule : NzbDroneRestModule<ImportExclusionsResource>
+    {
+        private readonly IImportExclusionsService _exclusionService;
+
+        public ImportExclusionsModule(NetImportFactory netImportFactory, IImportExclusionsService exclusionService) : base("exclusions")
+        {
+            _exclusionService = exclusionService;
+            GetResourceAll = GetAll;
+            CreateResource = AddExclusion;
+            DeleteResource = RemoveExclusion;
+            GetResourceById = GetById;
+        }
+
+        public List<ImportExclusionsResource> GetAll()
+        {
+            return _exclusionService.GetAllExclusions().ToResource();
+        }
+
+        public ImportExclusionsResource GetById(int id)
+        {
+            return _exclusionService.GetById(id).ToResource();
+        }
+       
+        public int AddExclusion(ImportExclusionsResource exclusionResource)
+        {
+            var model = exclusionResource.ToModel();
+
+            return _exclusionService.AddExclusion(model).Id;
+        }
+
+        public void RemoveExclusion (int id)
+        {
+            _exclusionService.RemoveExclusion(new ImportExclusion { Id = id });
+        }
+    }
+}