Spring RTS Engine

Since new update nano radius has become tiny so they can't assist labs.

Spoke to BD, he said it was probably due to min build distance being reduced, and that that a fix would be giving nanos a specific build distance than using default minimum one.

Oh, good. I thought I was the only one who had that problem. Makes nano towers pretty much useless for the moment.

It's fixed in the latest beta. I could also use some more feedback for balancing issues and experimental balancing changes.