Use relative path, organize folders for `ytPrivate` as they are for real or use a `.htaccess` to deny the direct access/use from end-users?

[Benjamin-Loison]

Line raising a problem as it is only Apache 2 compliant AFAIK.

Solving this issue should solve the following nonsense on index.php while the keys.txt file isn't existing/accessible where the API looks for it, as current state:

Currently this service is powered by 1 keys.

Linked to #24.

[Benjamin-Loison]

Making metrics/ part of the git would make sense to kill two birds with one stone. By the way advertising the metrics on the homepage may makes sense.

[Benjamin-Loison]

Maybe moving keys.txt from ytPrivate/ to noKey/ would make sense.

[Benjamin-Loison]

Renaming to private/ and possibly getting rid of ytPrivate/ would be nice.