Moves mouse pointer to the bottom center of the screen and clicks on it.

def acknowledge_gnome_notification():
    """
    Moves mouse pointer to the bottom center of the screen and clicks on it.
    """
    x0, y0 = mouse_pos()
    mouse_move(10000, 10000)  # TODO: What if the screen is larger? Loop until mouse position does not change anymore?
    x, y = mouse_pos()
    mouse_rmove(-x/2, 0)
    mouse_click(LEFT)
    time.sleep(.2)
    mouse_move(x0, y0)