* Remove Negroni in favor of the standard net/http server.
* Remove gorilla/mux in favor of the standard net/http NewServeMux.
* Remove gorilla/sessions in favor of Redis session_id cookie.
* Remove the hacky glue controllers setup in favor of regular defined routes
in the router.go file directly.
* Update all Go dependencies for Go 1.24
* Move and centralize all the HTTP middlewares.
* Add middlewares for Logging and Recovery to replace Negroni's.
* Legacy-importer tool updates the DB primary key serial after migrating
the posts, to be max(posts.id)+1 -- especially important for
PostgreSQL and MySQL (SQLite3 correctly picked the next ID by
default?)
* Add blog archive page and RSS, Atom and JSON feeds for the blog.
URLs are /blog.rss, /blog.atom and /blog.json
