- Don't show loading spinners while waiting for user action
- When checking if there are other devices we can verify against, only
look for devices that are actually cross-signed.
- Adjust displayed options depending on whether other devices and/or
recovery keys exist, and add an option to reset cross-signing keys
if necessary.
- Various minor clarifying adjustments to UI styling/text
Signed-off-by: Faye Duxovni <fayed@element.io>
