Fixing that Orchard.Email Workflows classes weren't actually under the corresponding feature

src/Orchard.Web/Modules/Orchard.Email/Activities/EmailActivity.cs

@@ -12,7 +12,7 @@ namespace Orchard.Email.Activities {
         void Enqueue(string message, object parameters, int priority);
     }
 
-    [OrchardSuppressDependency("Orchard.Email.Workflows")]
+    [OrchardFeature("Orchard.Email.Workflows")]
     public class EmailActivity : Task {
         private readonly IMessageService _messageService;
         private readonly IJobsQueueService _jobsQueueService;

src/Orchard.Web/Modules/Orchard.Email/Forms/EmailForm.cs

@@ -10,7 +10,7 @@ using Orchard.Localization;
 
 namespace Orchard.Email.Forms {
 
-    [OrchardSuppressDependency("Orchard.Email.Workflows")]
+    [OrchardFeature("Orchard.Email.Workflows")]
     public class EmailForm : Component, IFormProvider {
         private readonly IFeatureManager _featureManager;
         protected dynamic New { get; set; }