build-steps/10_prepare-build-machine: added ruby-ronn to build dependencies (required for creating man pages)
build-steps/35_copy-debian-packages-into-img:
no longer hardcoding version
new build step: build-steps/60_install-common-packages
build-steps/40_install-meta-packages: added more meta packages
build-steps/60_install-common-packages: added installation of DummyTor package
build-steps/50_run-chroot-scripts-pre-d:
code simplification and refactoring,
now using $CHROOT variable instead of chroot directly
deleted whonix_workstation/usr/share/whonix/chroot-scripts-pre.d/70_dummytor,
because no longer required. Its now implemented in /etc/apt/preferences.d/
and dummytor gets installed by build step 60_install-common-packages.
renamed:    whonix_shared/usr/share/whonix/chroot-scripts-pre.d/80_slimdown -> whonix_shared/usr/share/whonix/chroot-scripts-post.d/80_slimdown
renamed:    whonix_workstation/usr/share/whonix/chroot-scripts-pre.d/70_torbrowser -> whonix_workstation/usr/share/whonix/chroot-scripts-post.d/70_torbrowser
new file:   whonix_gateway/usr/share/whonix/chroot-scripts-post.d/placeholder
new file:   whonix_workstation/usr/share/whonix/chroot-scripts-pre.d/placeholder
new build step: build-steps/75_run-chroot-scripts-post-d
new whonix_shared/usr/share/whonix/chroot-scripts-post.d/ scripts:
- whonix_shared/usr/share/whonix/chroot-scripts-post.d/10_root_check_2
- whonix_shared/usr/share/whonix/chroot-scripts-post.d/20_sanity_checks_2