Change the HTML & CSS for user-list-item's to
support their content being split into 2 columns
of a grid instead of the edit link being
positioned absolutely.
Also includes:
1. removes `<div>`s from `<ul>` (non-valid HTML)
2. split action link out from permissions list
3. split summary of folder permissions out from
permissions list
4. introduces a class for blocks of text that
appear when there are no items.
5. fixes tests broken by changes to HTML
be83ea36ea