When running rb-site install in an automated mode (using --noinput),

things would fail if either --company or --admin-email were left out.

We were saving the default values of None, but the support data

generation couldn't serialize these to strings.
To get around this, some people tried posting empty strings (using "" or

'""').
We now normalize None or single/double quotes to an actual empty string.

Installed sites without these values.
Installed sites with "", '', '""', and "''".