Config related v19.x/Trixie updates - mostly webserver and security related

[JedMeister]

• some minor linting related updates (mostly shellcheck)
• webservers (apache, nginx & lighty)
  • cipher updates
  • disable access to all dot files by default
  • other security related conf hardening
  • other general conf refactoring (mostly apache)
• tomcat
  • cipher updates
  • other conf updates, mostly aesthetic
  • update java version
  • add support for tomcat 11 - Trixie has both 10 & 11 - currently support for both is in a single overlay, but perhaps they should be split up?
• postfix
  • cipher and other config updates
  • manually start postfix at build time - init.d script now fails in chroot (perhaps should be moved to our dummy systemctl script?)
• sysctl config
  • move from conf script that appends to default conf to separate purpose specific overlays in /etc/sysctl.d/ dir
• plan adjustments
  • updates for changed Trixie packages
  • temporarily comment di-live & tklbam