UC-84 Make sure maintenance/CLI scripts run properly w/ FacebookClientHooks

Some of the new FacebookClientHooks seem to be called from maintenance scripts.  Make sure these scripts don't fail because of this.

Also added some logging for the AsyncCache code

https://wikia-inc.atlassian.net/browse/UC-84
I thought about that, but the timestamp is expressed as YYYY-MM-DD etc., with a timezone.  I wanted way to quickly compare the TTL to the time at the point of logging.