a bit of reorganisation inside web/views:
* move all workflow related stuff into views/workflow.py
* move all schema related stuff into views/schema.py
* move all RSS related stuff into views/xmlrss.py
* start new editforms module, designed to contains new automatic forms code
from warnings import warn
warn('moved to cubicweb.entity', DeprecationWarning, stacklevel=2)
from cubicweb.entity import *
from cubicweb.entity import _marker