Changes to protect kano-connect multiple instances

 * kano-connect will refuse to step in if kano-wifi is running, this will protect it from the desktop widget periodic start
 * kano-wifi will not terminate if kano-connect is running, this protection is moved to kano.network module (will be terminated)
 * kano-connect will not start if the internet is already up
You are right @pazdera , confusing to complain with an error here. thanks for spotting it!