Adds several new examples to the Sandbox demonstrating the proper use of
ARIA labels and title attributes to create accessible buttons and links,
including icons. Also demonstrates four counterexamples, showing why
they cause problems for assistive technology users. There is additional
commentary in the HTML comments above each button.
Signed-off-by: Stephanie Leary <stephanie.leary@equinoxoli.org> Signed-off-by: Jane Sandberg <js7389@princeton.edu> Signed-off-by: Terran McCanna <tmccanna@georgialibraries.org> Signed-off-by: Garry Collum <gcollum@gmail.com> Signed-off-by: Steven Mayo <smayo@georgialibraries.org>