feat: make the basic photo check the default, no blink needed

packaging/deb/control

@@ -13,10 +13,12 @@ Description: face unlock for KDE Plasma
  instead of a password. A bubble at the top of the screen, above the lock
  screen too, shows the face being looked for, recognised or refused.
  .
- Before a face counts it has to show a sign of life (a blink, or the nose
- moving the way a real nose does when the head turns), so a photo held up to
- the camera is not enough. It is a convenience, not a security upgrade: a
- webcam sees a flat picture, and a video of the person can get through.
+ A photo on a phone, a tablet or a glossy print is refused by its
+ reflection and its straight edges. The strict photo check also wants a sign
+ of life (a blink, or the nose moving the way a real nose does when the head
+ turns), which stops a printed photo too. It is a convenience, not a security
+ upgrade: a webcam sees a flat picture, and a video of the person can get
+ through.
  .
  Everything runs on the machine. Faces are stored as numbers readable only by
  root, never as pictures. Run "plasma-face-unlock disable" before removing