[table view] some new table view enhancements * rewrite entiy table view column renderers to use default_* methods instead of lambda so that column_renderers may be properly deep-copied * new RelatedEntitiesColRenderer * default addcount to false on RelatedEntityColRenderer * more doc

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'))