zeusminer: Identify the Chip # both in the UI and RPC API

![ZeusMiner Stats](http://www.nwoolls.com/othercontent/BFGMiner%20ZeusMiner%20Per-Core-Chips-IDd.png)
The summary shown in the content for Manage won't have the chip number except for the first chip. If that's okay with you, it's okay with me.