Fixed sending DelayedGet signal for getByToken

The call path taken by getByToken is different than that for getByLabel during an unscheduled call. This caused the DelayedGet signal to not be sent. The DelayedGet signal has now been moved to unscheduledFill since that is used by both call paths.
Merge pull request #1340 from Dr15Jones/fixDelayedGetServiceSignal

Multithreading fixes -- Fixed sending DelayedGet signal for getByToken