Further Controls at 2C?

[JAWS-test]

Wouldn't it be good if at 2C more controls could be included. e.g. role=switch or checkbox. Then the status (checked, not checked) would be used as a localized string in the local language (like for input type=submit)

This is already implemented for AccName Prototype Test (however, a checkbox always outputs "on", regardless of the status)

[MelSumner]

Updated title to reflect reordering from #122