requests on DNSPort don't wake-up dormant tor

trying to make dns queries against tor while it's dormant let the requests timeout instead of making tor wake-up.
According to @arma this is because note_user_activity() is not called on the code-path for dns queries sent on the dns port. It is however called for queries through the controller.

I'll test if it's also an issue for other kinds of proxy tor can run as, and edit this ticket accordingly.
There does not seems to be problems with SocksPort, HTTPTunnelPort and TransPort (NATDPort untested)