I should be able to specify that an HTML element is disabled

(User Story, Closed -> Fixed, Priority: Critical, Test Status: No automated tests yet , Reported By Bad Link: Thing 3y284oe not found, )
QText
Summary: Currently, there is no way (even if you are building raw XML) to show a disabled button.
The issue here is simply that the disabled attribute isn't white-listed. I believe that's trivial and safe to fix.