Co-authored-by: Sujith Haridasan <sujith@moodle.com>

We now have enough default providers, so no need to show a warning in that case

- Label the table/list with aria-label
- Hide sort buttons from screen-readers and use aria-sort instead
- Remove the redundant title from decorative thumbnails

This implementation will introduce the usage plugin
which shows qhich quizes are using this question,
number of attmpts and other information.
Co-Authored-By: Safat Shahin <safatshahin@catalyst-au.net>
Co-Authored-By: Matt Porritt <mattp@catalyst-au.net>

This reverts commits c1468388,
c1468388 and
9a900492.