Show a warning when a user tries to delete an admin device

As reported in this comment, it can happen that a user who has no clue of what is a Tango admin device deletes such a device by mistake.

It would be good to display a warning when a user wants to delete an admin device.
About the warning message, I could suggest something like: Warning! You are about to delete Tango Admin device 'dserver/server_name/instance_name'. If you delete it, the device server server_name/instance_name will stop working as expected. If you want to delete 'server_name/instance_name' device server instance, you can do it from the Server tab. Are you sure you want to delete 'dserver/server_name/instance_name' device? Yes/No

Better ideas for a message are welcome, of course!