Revert "minor fix for the display3.sh"

This reverts commit 4ef35e372c60609966aaea3c0859cfe6bc584ee3.
var changes
refixed display3.sh
added option for interactive file install, plan to replace the hostname feature by this because more intuitive and less errorprone
autostart changes for thunderbird
ctf00 in ssh-config
small fixes
display3.sh, winter wallpaper and ssh config changes
i3lock script setting random lockscreen