JS: auth: isAuthenticated returns true when no 'module' is attached

I noticed some interesting behavior with the 'isAuthenticated' function.

It returns TRUE even when the pipe is not authenticated, because a
wrong(or no) authenticator has been attached,

See:

https://gist.github.com/3812824

IMO it should return FALSE when no authenticator is attached. Even on
a 'pipe connection' where no auth is required, the
'isAuthenticated:false' would be still wrong, as the connection is not
authenticated - since not required...