In spite of there being considerable documentation sometimes in the
config file, we go with CC0 because we don't want the notion of
'derived work' of a config file.
The example `settings.conf` is also CC0. Add some docs to
it while we're at it.
locale hardcoded to en_US until local globalstorage is available
run pep8 on bootloader main.py, plain switch from subprocess to chroot_call fails for gummiboot call
