Emit approve/deny status for websockets, update doc string + a comment

awx/api/permissions.py

@@ -249,4 +249,3 @@ class InstanceGroupTowerPermission(ModelAccessPermission):
         if request.method == 'DELETE' and obj.name == "tower":
             return False
         return super(InstanceGroupTowerPermission, self).has_object_permission(request, view, obj)
-

awx/api/views/__init__.py

@@ -4487,8 +4487,7 @@ class WorkflowApprovalDeny(RetrieveAPIView):
         obj.deny(request)
         return Response(status=status.HTTP_204_NO_CONTENT)
 
-
-
+# Placeholder code for approval notification support
 class WorkflowApprovalNotificationsList(SubListAPIView):
 
     model = models.Notification