Update index.html

Change the reference URL to https now that it's being used for the configuration.
Update make-webcerts.sh

Seeing that I can't get the multiple allowed host names working, we can go back to using the lighter weight px5g (it's fixed at least). I'll keep working on multi-hostname.
Update make-webcerts.sh

Restoring a couple of accidentally nuked conflicting edits.
Merge pull request #2 from dperson/master

I updated the first cerowrt web page to show https instead of http in the configuration URL. I merged my current version of make-webcerts.sh. px5g is fixed, no need for openssl until I can get multi-hostnames to work.