[Feature Request] underscore blog posts as draft

[jpoesen]

The idea is to treat content items in /content/blog/ that start with an underscore as draft items.

Draft items should be excluded from the publicly visible listings, but there should be a way for admins to still preview them.

We could introduce sessions and login/logout but that may make things more complex than we need right now.

Maybe we could start a session by trying to detect a secret key in the url? Like example.com/admin?key=123456789, which would start a session for an hour or so, or until example.com/logout is requested.

Another option would be to add github / twitter / ... oauth integration for authentication.

Other ideas welcome too.