Rework the Channel Planning section to clarify, expand, and illustrate
the importance of channel plans and frequency coordination.
Clarify Radio Spectrum section
Add HeyWhatsThat Profiler to Network Modeling section
Clarify the explanation of equipment size and gain for the different
bands.
Tweak the description of antenna polarization to clarify.
Clarify the statement about link quality so it is adequate for required
applications.
Added Network Design Guide sections, and edited a few Getting Started Guide areas. Both guidebooks are now part of the single existing AREDN documentation repository.