add useful tools to chroot, clean package caches
add -e flag to shebangs

this way, if a build step fails, the script will error out immediately,
saving time in tracking down errors.
add proper shebang to chroot_tasks
install bandshell from github instead of rubygems
point at localhost:4567/screen instead of just /
run bandshell network configuration at boot

This creates an init.d script that hooks in before /etc/init.d/networking
and creates the /etc/network/interfaces file from the configuration files
stored on the live medium. It also attempts to remount the medium in
read-write mode for use by Bandshell.
Merge branch 'master' of https://github.com/concerto/concerto-player

Conflicts:
	chroot_tasks.sh