byOrg from the site alert config is not used

[iuliag]

Description
If a report needs to be sent only at site live, then byOrg: false needs to be set at organization level.
byOrg from the site alert config is not used.

Proposal(s):

1. cleanup API spec, example and, ideally, also the data model.

To Reproduce
Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
If applicable, add screenshots to help explain your problem.

Version:
run: $ hlx --version

Additional context
Add any other context about the problem here.