Add more accessibility labels for screen readers
- Add a label for the "X" button in comment areas, like "Remove Action: Change Subscribers".
- Add a label for the floating header display options menu in Differential.
- Add role="button" to PHUIButtonView objects that we render with an <a ...> tag.
Viewed a revision with ?__aural__=true:
- Saw "Remove Action: ..." label.
- Saw "Display Options" label.
- Used inspector to verify that some <a class="button" ...> now have <a class="button" role="button" ...>. This isn't exhaustive, but at least improves things. A specific example is the "edit", "reply", etc., actions on inline comments.
Reviewed By: amckinley
Maniphest Tasks: T13164
Differential Revision: https://secure.phabricator.com/D19595