Add frame header hide for pihole

[nemchik]

Same frame thing that portainer has going on.

[aptalca]

Out of curiosity, what was the original reason for separating the root location from the /admin location?

On my server I only have the root location defined for proxy and it works just fine.

[nemchik]

You can add auth to the admin block and skip it on the root location.

[aptalca]

ah, gotcha