[config] cleanup/refactor server sources file values handling
* kill former `sources` method, misnamed since we've only the system source
configuration in the sources file (and some default admin account information)
* introduce new system_source_config and default_admin_config properties to
access to the two information in this file
Then use one or the other when appropriate
#! /bin/sh -e
case "$1" in
remove)
if [ -x "/etc/init.d/cubicweb-ctl" ]; then
invoke-rc.d cubicweb-ctl stop || true
fi
;;
esac
#DEBHELPER#
exit 0