lock-screen: More ways to get to enter password
Right now, the gnome-shell lock-screen requires the user to slide the area in the forefront up (e.g. with a mouse). This might make sense for touch screen devices, but for devices with mouse input and older people (e.g. my parents), this might be difficult - also because competitors also allow the use of ENTER and double click to jump to the password prompt. So I would suggest to also implement the use of ENTER and double click to jump to the password prompt.