Domain Mapping 3.2 beta

Hi all

Attached to this thread is the first beta of version 3.2 of the domain mapping plugin.

This version adds a few code changes and is the first pass at moving from a single Pro sites (on/off) domain mapping option to allowing the admin to select which Pro sites levels domain mapping is available for.

I'll add all the new betas to the top post of this thread as I add more features.