Disable screen lock on mesh clients

src/freedombone-image-customise

@@ -1150,6 +1150,9 @@ function configure_user_interface {
         mesh_client_startup_applications
         mesh_desktop_icons
 
+        # disable screen lock
+        chroot "$rootdir" dconf write /org/gnome/desktop/screensaver/lock-enabled false
+
         # change the desktop background
         if [ $MESH_DESKTOP_BACKGROUND_IMAGE ]; then
             if [ -f $MESH_DESKTOP_BACKGROUND_IMAGE ]; then
@@ -1223,11 +1226,13 @@ export TMP=/tmp/ TMPDIR=/tmp/
 
 username=$MY_USERNAME
 echo $"warning: creating initial user $username with well known password!"
+if [[ $VARIANT == "meshclient" || $VARIANT == "meshusb" ]]; then
+    # on the mesh client don't use a password by default
+    MY_PASSWORD=''
+fi
 password=$MY_PASSWORD
 chroot "$rootdir" adduser --gecos $username --disabled-password $username
-if [[ $VARIANT != "meshclient" && $VARIANT != "meshusb" ]]; then
 echo $username:$password | chroot $rootdir /usr/sbin/chpasswd
-fi
 chroot "$rootdir" adduser $username sudo
 
 case "$MACHINE" in