Accessibility Findings

- [x] Reset settings back to default (GP.2)
- [x] Fix focus traps and allow keyboard focus on toolbar (KN.1, KN.9)
- [x] Fix tab order on dialog pages (KN.2)
- [x] Don't use just color to indicate an error (CN.2)
- [x] Announce begin/end of list navigation for screen readers (KF.4)
- [x] Improve screen reader compatibility (KF.5, 6, 7)