Revert "exclude/remove the use of an AuthToken when the PMS is not included as valid servers for the myPlex account ( when using multiple PMS - myPlex PMS+Local PMS)"

This reverts commit 8758adabbfc4815ea23190cc51fa2352d898cd48.
only use AuthToke for valid machineID - h/t Schuyler
add myPlex found servers to the server registry. It allows non-GDM and shared servers to function while myPlex is offline -- or if the internet is down and the PMS is local