[schema2sql] More docstrings and minor API improvements Along the way, renamed local `column` variable to `attr` where we're NOT manipulating a DB column name but a schema attribute. Related to #14050899

#! /bin/sh -e

if [ -x "/etc/init.d/cubicweb-ctl" ]; then
    invoke-rc.d cubicweb-ctl restart || true
fi
 
 
#DEBHELPER#
 
exit 0