Consider adding Apply and Clear buttons to Categories dropdown

One thing to bear in mind is the buttons could make things more difficult for keyboard users. Some thought would need to be given to make sure they aren't disadvantaged.

I've added the tag for wcag2.2. sc 3.2.2 https://www.w3.org/WAI/WCAG22/Understanding/on-input.html which basically illustrates why the proposed resolution, having an apply and clear button, is important or probably necessary.

re #2 📌 Consider adding Apply and Clear buttons to Categories dropdown Active in what regard would/could the buttons make things more difficult for keyboard users?

I agree that the use of apply/clear buttons would enhance the UX. Going to add this to the roadmap.

@rkoller At the moment the keyboard user can tab onto the category box, press space to open it, then use up/down arrows to move between categories, and space to select/deselect them. Pressing tab will close the drop-down and move to the next control.

I agree that having the modules change behind the drop-down as we currently do is confusing. We just need to ensure there is a clear an intuative UI for getting from the list of categories to the apply/reset buttons.