Gave up using WebSocket

Flask-SocketIO does not fully compatible with Gunicorn, and it limited to 1 worker, which it will takes forever to finish loading the webpage. Switched back to  using ajax.

src/static/css/dashboard.css

@@ -198,6 +198,10 @@ body {
     color: #dc3545;
 }
 
+.btn-lock-peer:hover{
+    color: #6c757d;
+}
+
 .btn-setting-peer:hover{
     color:#007bff
 }