Change Persist Thread to a 30 Second delayed, run once on changes.

c_micasad/cache/SecretStore.cs

@@ -501,6 +501,13 @@ namespace sscs.cache
                 return false;
         }
 
+
+		internal void UpdatePersistentStore()
+		{
+			if (lss != null)
+				lss.PersistStoreWithDelay();
+		}
+
         /* This function would need to do any storage/cleanup required
          * before removing a user session.
          */