Addition: Prohibit naming of elements

[scottaohara]

Adds new naming requirements section.

Additional work and review needed.
Need to indicate all elements with implicit roles which prohibit naming

closes #147

test case

• axe largely supports this rule, but for a few elements.

• w3c validator partially supports this rule, but needs to change warnings to errors, and needs to add a check for aria-labelledby (only checks for aria-label right now)

• ibm and arc toolkit do not yet support the naming prohibited rule (arc toolkit has implemented this rule)

• [ ] HTML validator

• [ ] IBM equal access accessibility checker

• [x] axe-core (supported but for 2 elements)

• [x] ARC toolkit

NOTE: see follow on issue https://github.com/w3c/html-aria/issues/407 concerning the rp element, which has been removed from this PR.

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Preview | Diff

[scottaohara]

This PR needs #392 to be merged first. But this is now ready to review.

cc @patrickhlauke @stevefaulkner

[scottaohara]

@patrickhlauke ”name from” is on purpose. It’s what aria says

[patrickhlauke]

@patrickhlauke ”name from” is on purpose. It’s what aria says

aha, in that case, as awks as it sounds...make it so