No easy-to-find sketch for the 4610

[terrillmoore]

I helped someone set up their 4610 recently, and we were both flummoxed, until I guessed that the 4612 sketches would work for the 4610. We need to make it much more clear at each level of the manual search hierarchy, that the 4610 and 4612 use the same demo sketches. This also needs to be reflected in names.