Replace favicon with something else

This is an icon that I threw together in a few minutes.  I don't want
my avatar as the favicon for this repository.

Also, the favicon.png has moved to the root directory as it is
something that is meant to be customized along with the settings that
is also in the root.

handlers.go

@@ -47,7 +47,7 @@ func (self writeFlusher) Flush() error {
 func wsStaticFiles(w http.ResponseWriter, r *http.Request) {
 	switch r.URL.Path {
 	case "/favicon.ico":
-		http.ServeFile(w, r, "./static/favicon.png")
+		http.ServeFile(w, r, "./favicon.png")
 		return
 	case "/justchat":
 		http.ServeFile(w, r, "./static/justchat.html")