bson2json: Add python utility to convert bson data to json.
easycert: Add tool for easy CSR certificate creation and testing.
easycert: Clean up internals.

- Fix documentation to be in sync with other vcutil docs.
- Make CGI certificate home setting a global (CERTHOME).
- Use umask 077 to hide the key.
- Fix CGI tests.
- Limit columns to 80.