Reintroduce favicons

Store it at the static folder, like before.

I created a new config field for that originally, but then I understood that it is to be thrown away anyway when the Structure comes, so decided to keep it the old way.

web/stuff.go

@@ -21,6 +21,9 @@ func initStuff() {
 	http.HandleFunc("/update-header-links/", handlerUpdateHeaderLinks)
 	http.HandleFunc("/random/", handlerRandom)
 	http.HandleFunc("/about/", handlerAbout)
+	http.HandleFunc("/favicon.ico", func(w http.ResponseWriter, rq *http.Request) {
+		http.Redirect(w, rq, "/static/favicon.ico", http.StatusSeeOther)
+	})
 }
 
 // handlerList shows a list of all hyphae in the wiki in random order.

web/web.go

@@ -65,6 +65,7 @@ func handlerRobotsTxt(w http.ResponseWriter, rq *http.Request) {
 	w.Write([]byte(
 		`User-agent: *
 Allow: /page/
+Allow: /hypha/
 Allow: /recent-changes
 Disallow: /
 Crawl-delay: 5`))