Couple of tweaks

Hi,
I've been using JRDS for monitoring my home server for past half-year, frankly, it is great :)
Recently I merged my patches with your latest master and I'd like to share them with you. Maybe some of this comes useful.

Generally, within agent it is a graph for TCP I/O traffic and CPU Core0 Temperature (this works for my server, but I'm not quite sure how reusable is it).