Statistics to have site-level stats
Statistics: add a PieChart of top-types, add table of top unique-IP
Add top unique-DNS visitors to stats for finding robots.
Utilities for ElasticSearch to mark robots as spiders
Add SpiderDetector lookup for spiders by UserAgent, based on COUNTER list

Logic for lookup on DNS is present, but not able to be used yet.
This code was adapted from @mire patch for IRUS stats
Use usage-statistics module for configs, un-DRY code for loading bot regex
stat-util-es Mark Spiders method not yet implemented.
Merge pull request #1 from osulibraries/osukb-staging

Real-time robot spider detection by user agent.