Extension to Media Queries based on IMS Access For All Specifications for content selection

This still needs work but this allows us to provide user selectable content
adaptation based on IMS GLC access For All using media queries. This helps
canvas as well as other content. I would like to take this and align it
with David Singer's work.

This is for today's call.

(See attached file: afamq.html)

Rich Schwerdtfeger
Distinguished Engineer, SWG Accessibility Architect/Strategist