Make recent submissions more accessible for screen readers #4268
Description
Describe the bug
The recent submissions section on the home page currently uses a structure of multiple <div>s to render the recent submissions. This should be changed to an <ul>/<li> structure to be more accessible for screen readers. In addition, the "Load more ..." button should also be replaced with an <a> element to be more semantically accurate, since it always redirects you to the search page.
Expected behavior
Screen readers should be able to detect that the recent submissions section displays a list of items, and it should be clear that the "Load more ..." button is actually not a button but a link to the search page.