TS-2563: always set the SSL default verify paths

When working at reverse proxy mode with the following remap rule:

map https://xxx1.com https://xxx2.com
ssl.client.verify.server=1

If xxx2.com is providing trusted certificate and
'ssl.client.CA.cert.filename' is NULL, ats should be able to verify
the certificate in terms of the default provided CAs.
Update records.config.en.rst

Fix the default value for proxy.config.http.transaction_active_timeout_in

This closes #48.