Added slf4j dependency and some trace-level logging for the filter to explain why a request is intercepted or not.
standardized logging so it would be consistent and searchable by yes/no
standardized logging
also fixed a bug: whitelist was actually a blacklist.
fixed the semantics and logging for whitelists and blacklists
Merge pull request #4 from AssuredLabor/interceptLogging

Add logging of intercept rules using slf4j