gnome-shell: we cannot use escape

Signed-off-by: Marc-Antoine Perennou <Marc-Antoine@Perennou.com>
gnome-shell: add stylesheet.css

Signed-off-by: Marc-Antoine Perennou <Marc-Antoine@Perennou.com>
gnome-shell: remove unused label

Signed-off-by: Marc-Antoine Perennou <Marc-Antoine@Perennou.com>