Add global utility function to get heka client, not just task method.
Cleanup: use get_heka_client rather than threading heka_client arg around.
Add counter metrics for moving {cell,wifi} blacklisting.
Move get_heka_client to heka_logging module and use it everywhere.
Reduce gunicorn log level, bring back celery worker restarts.

We disabled the celery maxtasksperchild setting as it was broken for
a couple releases.
crap