Set up an edit domain

[geerlingguy]

Related to #141. So far the DDoS attempts aren't very sophisticated; and running www.jeffgeerling.com behind CloudFlare offers an extra layer of protection for the front-end.

But I'd like to have a separate edit domain.

Some notes:

• It's best to set up the edit prefix on a private DNS server, so it doesn't expose backend IPs... though I might not do that.
• I could set .htacess to only allow access to the edit domain from my home's IP address (though since .htaccess is public in this repo, that would then expose my home IP, lol).
• I could add an Nginx rule to only allow access on the Edit domain from my home IP address. Might go that route.

[geerlingguy]

I got some of this working, though if I go through to the edit domain, I end up on a 404 as it tries redirecting through to www.jeffgeerling.com.

What I might need to do is set up a completely separate Drupal config block for the edit domain. Might be good to do that anyways, since cert is different (for edit.* instead of www.jeffgeerling.com) and I might want to add more limitations.

[geerlingguy]

Things seem to be working well at this point. Closing the issue.

[geerlingguy]

I've also added a public redirect from edit.jeffgeerling.com to www.jeffgeerling.com following this advice: Cloudflare: Redirecting One Domain to Another