Change all db now to clock_timestamp for triggers

4dev/database/function/set_date.sql

@@ -5,9 +5,9 @@ RETURNS TRIGGER AS
 $$
 BEGIN
     IF TG_OP = 'INSERT' THEN
-        NEW.date_created := 'now';
+        NEW.date_created := clock_timestamp();
     ELSIF TG_OP = 'UPDATE' THEN
-        NEW.date_updated := 'now';
+        NEW.date_updated := clock_timestamp();
     END IF;
     RETURN NEW;
 END;