Issue #171

server limit the number of webUI clients that can attach.

This will probably always be "0" or "unlimited", but allows ops to set a max limit for WebUI clients. (realistically, probably 3 is more than enough)

@crankycoder r?
I'd love to fix that, yes. Honestly the other two should be ws.* as well, except I didn't catch it before this went to PROD. Ah the fun of starting things before you realize they're a category. Fortunately, names are kind of arbitrary since it's all key/value. I prefer having the groups to mentally organize things, but they're an illusion.

Next major version will address the inconsistent entries.