Get map exchange string from savegame with one click

[jodokus31]

TL;DR

Small QoL. Copy the map exchange string from savegame to clipboard directly via the button

What ?

In order to get the map exchange string, you have to click that button on top right of a save game.
Then a dialog opens, which lets you copy the map exchange string. and then you have to close it again.

My proposal is to don't show the dialog, but directly copy the map exchange string to clipboard.
Alternative, close the window after clicking "Copy". rename the button to "Copy & Confirm".

Why ?

It's faster to get the map exchange string. 1 click instead of 3. I am always confused how much clicking is necessary.
I also don't see much use to make the map exchange string visible in the dialog box.