Make the threshold check more efficient.
Make the threshold check more efficient.

Instead of calling ZSCORE for each actor, simply add the WITHSCORES
option to the ZRANGE call and do the comparison. This saves (n - m) calls to
Redis where n is the number of offenders and m is the number of
historically blacklisted actors.

Signed-off-by: Aaron Bedra <5a7a6a189b47cd31d24667a751e4003cd04eced5@aaronbedra.com>

repsheet/backend,repsheet/backend