WAI-ARIA 1.3 FPWD HR tracker

[daniel-montalvo]

This issue tracks Wide Review comments for WAI-ARIA 1.3 FPWD

• [ ] Security
• [ ] Privacy
• [ ] I18n
  • [ ] aria-keyshortcuts needs attention
  • [x] Comment roles might need language/direction
  • [x] "Translatable attributes" incomplete?
• [x] Accessibility
• [x] TAG