Various fixes for scheme ssgs review

Publish scheme ssgs review

Update style of post collection

Update blog layout

Add pages

Number heading only inside post-content div

Splite theme in separate functions.

Migrate to haunt-based site.

assets: Add simple and paper css.

Add site draft.

Makefile: Add repl, serve, tmp-site targets.

.envrc: Add haunt.

Remove unecessary files.

Commit all stale stuff.

Add server_tokens off.

Migrate to rde flavored nginx-service-type.

Move use-modules to module definition.

Replicate pinky config in separate module.

Add profiles.mk and rde/channels*.scm.

Add auxiliary scripts.