Finished with bug 22090

I removed  "The setting of <code>aria-disabled</code> does not make the content disabled, it ONLY sets a <em>disabled</em> flag on the element."

Several outstanding issues here.
-Someone needs to check the iframe seemless row I added
-Element is not natively focusable (li, span, div, etc.) need to add examples
-i haven't addressed this yet 
> Text level elements not listed elsewhere
Out of curiousity, why weren't INS and DEL listed here instead of on their own row?
-Element that is a candidate for constraint validation but… need to add link