BIG FIX: RobotsExclusionFilter closes resources on any error!!! HUGE BUG FIX HERE, before the Resource inputstream leaked on non-200 or
other exception!
IMPROVEMENT:  Testing RobotExclusinonFilter getFromCache() to load from the liveweb cache, but and update redis

FIX: Canonicalizer calls catch IOException in case URIException isn't being caught?