update for new levigo ttl api and use specific indexer
revamp metrics, admin interface, etc

* more internal metrics + make them all in metrics 2.0 format,
  and submit to carbon directly, no need for statsd
* admin interface to get insights into what's going on, metrics, stats,
* etc.
* change default ports to make it clear it goes in front of carbon
* fix ES port in config
~
fixes