Merge remote-tracking branch 'origin/main'

static/js/check_new_messages.js

@@ -70,6 +70,8 @@ function check_new_messages (window,it){
         data: JSON.stringify(data_new_messages),
         success: function(data){
             success_check_new_messages(data)
+            const beep = new Audio('/static/sounds/beep.MP3');
+            beep.play()
         },
         error: function (data){