opt.

- move out btns from more vert btn (docker, sftp & etc.)
- redesigned routes
- confirmation before deleting private key

lib/core/extension/media_queryx.dart

@@ -1,5 +1,5 @@
 import 'package:flutter/widgets.dart';
 
 extension MideaQueryX on MediaQueryData {
-  bool get isLarge => size.aspectRatio > 0.87 && size.width > 600;
+  bool get useDoubleColumn => size.width > 639;
 }