-support weeks as well

git-svn-id: https://gnunet.org/svn/gnunet@31634 140774ce-b5e7-0310-ab8b-a85725594a96
if records from namecache do not match desired record type, go look in the DHT

git-svn-id: https://gnunet.org/svn/gnunet@31636 140774ce-b5e7-0310-ab8b-a85725594a96