Help Panel: UI updates for different email statuses
- Allow user to input an email if they don't have one. Email is not saved until the API module is ready (T211370).
- Inform user that verification email will be sent when they post question. Actual implementation will not be ready until API module is done.
- Adjust UI if user's email is not confirmed
Bug: T211113
Change-Id: I29ded847400c74be895ac9e4f203412af305c27b