build-steps/1900_run-chroot-scripts-pre-d: added error handler
comment
moved whonix_shared/usr/share/whonix/chroot-scripts-pre.d/40_add_torprojects_key to whonix_shared/usr/share/whonix/chroot-scripts-post.d/40_add_torprojects_key;
moved whonix_shared/usr/share/whonix/chroot-scripts-pre.d/50_update_package_lists to whonix_shared/usr/share/whonix/chroot-scripts-post.d/50_update_package_lists
whonix_shared/usr/share/whonix/chroot-scripts-pre.d/70_install_486_kernel -> whonix_shared/usr/share/whonix/chroot-scripts-post.d/70_install_486_kernel
whonix_shared/usr/share/whonix/chroot-scripts-pre.d/70_update_command_not_found -> whonix_shared/usr/share/whonix/chroot-scripts-post.d/70_update_command_not_found
whonix_shared/usr/share/whonix/apt.conf:
changed ip from 192.168.0.11 to 127.0.0.1 to make it independent from host network configuration
build-steps/1900_run-chroot-scripts-pre-d: support re-running the script
whonix_shared/usr/share/whonix/chroot-scripts-pre.d/70_sources -> whonix_shared/usr/share/whonix/chroot-scripts-post.d/70_sources
renamed:    whonix_gateway/usr/share/whonix/chroot-scripts-pre.d/70_tor -> whonix_gateway/usr/share/whonix/chroot-scripts-post.d/70_tor
new file:   whonix_gateway/usr/share/whonix/chroot-scripts-pre.d/placeholder