[donc] Fix building the cubicweb js documentation Avoids errors such as: Exception: Bad file id cubicweb.lazy referenced in INDEX_IN_ORDER in ../../../doc/tools/pyjsrest.py, fix this please

from os.path import join
from cubicweb.toolsutils import create_dir

option_renamed('pyro-application-id', 'pyro-instance-id')

create_dir(join(config.appdatahome, 'backup'))