Add screenshot menu and update prompt

Signed-off-by: Severin Kaderli <severin@kaderli.dev>

system/.config/dconf/root.conf

@@ -13,6 +13,12 @@ show-places-in-to-menus=true
 [org/nemo/list-view]
 default-zoom-level='smaller'
 
+[org/nemo/desktop]
+show-desktop-icons=false
+
+[org/cinnamon/desktop/default-applications/terminal]
+exec='termite'
+
 [desktop/ibus/general]
 engines-order=['xkb:ch::ger', 'anthy']
 preload-engines=['xkb:ch::ger', 'anthy']