Disable bulb controls when no bulbs selected

backend/src/main.rs

@@ -32,7 +32,7 @@ struct Opt {
     #[clap(short, long)]
     quiet: bool,
 
-    #[clap(long, short, default_value = "127.0.0.0:8000")]
+    #[clap(long, short, default_value = "127.0.0.1:8000")]
     bind: SocketAddr,
 
     #[clap(long, default_value = "./www")]