Wifi password should not be accessible without prior re-authentication

[spotlesscoder]

Problem

Consider a scenario where you leave someone with your laptop unattended just of a few seconds while the elementary OS desktop is not locked

That person could easily open and photograph the Wifi settings dialog of the WiFi connection you set up and take a photo of the password in the input field after toggling it to be displayed in cleartext

Proposal

Displaying the WiFi password again should only be possible after being prompted for the user's password again and successfully entering the correct password

Prior Art (Optional)

No response