document dbport setting
default to sqlite, so we can run out of box
rename bley.conf to bley.conf.example

the shipped bley.conf is only a ment as an example
thus rename it and avoid overwrite existing configurations.

Signed-off-by: Peter Lieven <pl@kamp.de>
include new conf example in the manifest
ditribute everything needed for tests in the tarball
create a sdist target