Update ARIA11

[JAWS-test2]

Fixes #919

Also:

• Update and addition of links
• Remove role=application (no landmark region)
• Adding role=region
• Adding the test for meaningful labeling

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[kfranqueiro]

I synced this branch today while looking through old PRs, which required resolving conflicts:

• In the list of landmarks, I only kept the banner change (which concerns the referenced bug); application had since been removed, navigation had since been changed to something similar to what was in this PR, and region had since been added. I did correct one duplicated word in the navigation item.
• The modification of one line of the first example was no longer applicable as the example had changed
• Preserved the addition to the test prodecure, although I wonder if items 3 and 4 could be merged?
• Preserved the additions under related techniques
• Preserved the changes to the first 3 resource links; the 4th is already pointing to a newer URL for what was added in this PR, and the 5th was added after this PR

See df64f09e for what was in the original commit of this PR.

[kfranqueiro]

Suggesting a change to phrase the new check conditionally, similar to the previous one:

Suggested change

	<li>Examine that each landmark region that appears multiple times on the page is labelled meaningfully.li>
	<li>If the same type of landmark appears multiple times on the page, check that each one is labelled meaningfully.li>

[bruce-usab]

Discussed on backlog call 5/16. We did not resolve if "each landmark region" was equivalent to "same type of landmark".