update the list of packages to install

This adds some needed packages to the live system.
keep the time zone data
get rid of the prompt shown on shutdown and reboot
remove more unneeded files in clean hook
create includes.binary dir & move isolinux to it

This moves the isolinux includes to an includes.binary directory. This
change is needed to avoid having to modify the Dockerfile to add new
files to the ISO in the future.
add includes.chroot directory & add /etc/motd

This changes the Dockerfile to add the includes.chroot directory and
adds the initial motd.
fix incorrect kernel module cleanup & add more

This fixes some wrong cleanup paths and removes some more unneeded
kernel modules.
make the power button work

This adds acpid and the required acpi files to make the power button
work.
add and enable init script for Docker
add persistent storage support
Merge pull request #8 from unclejack/live_environment_fixes

Live environment fixes & persistent storage