* Allow to ignore superuser traffic with an option.
Also: Fix some accounting bugs.
* CHANGELOG.
* Implement separate accounting for superuser and user traffic.
* Fix VST case with no authentication.
* Add description of new user-only traffic statistics.
* Add figures for user traffic.
* Simplify forwarding accounting.
* Remove brackets in metrics names.
* Finalize naming of metrics.
* fix MSVC compile warning
* tidy up statistics
* remove undocumented db.__save V8 method, previously used for the statistics gathering from JavaScript