Job stories for stakeholders (wiki)

David shared the Job stories for stakeholders
<https://www.w3.org/WAI/GL/task-forces/silver/wiki/Job_Stories_for_Stakeholders>
from
Jeanne in the maturity meeting today.

@lionel @jeff - we should take a look at this and meet with Jeanne in
regard to the role table.

Thanks,
Stacey