kd/register: don't start checker if the user is already registered.
kd/register: don't start checker if the user is already registered.

mischief/kite,wingyplus/kite,280455936/kite,koding/kite,fatih/kite,rjeczalik/kite,rjeczalik/kite,280455936/kite,wingyplus/kite,leeola/kite,koding/kite,cihangir/kite,leeola/kite,ppknap/kite,rjeczalik/kite,koding/kite,ppknap/kite,cihangir/kite,fatih/kite,ppknap/kite,mischief/kite