public ActionResult RemoveUsageFromResourceStructure(long usageId, long rsId)
        {
            using (ResourceStructureAttributeManager rsaManager = new ResourceStructureAttributeManager())
            {
                ResourceAttributeUsage usage = rsaManager.GetResourceAttributeUsageById(usageId);
                rsaManager.DeleteResourceAttributeUsage(usage);

                return(RedirectToAction("Edit", new { id = rsId }));
            }
        }