[book] Some tweaks to fix cubicweb-documentation package generation - Fix up PYTHONPATH setting to make sure sphinx can find cubicweb modules - Add a few missing build-dependencies

#! /bin/sh -e
#

if [ "$1" = configure ]; then
  if which install-docs >/dev/null 2>&1; then
    install-docs -i /usr/share/doc-base/cubicweb-doc
  fi
fi


#DEBHELPER#

exit 0