Merged chap_fondements_cubicweb and chap_bases_framework_cubicweb as they were both describing differents aspects of CubicWeb framework. Replaced original content of mise_en_place_environemment that was by mistake erased and replaced with chap_migration content.

#!/usr/bin/env python
from cubicweb.cwctl import run
import sys
run(sys.argv[1:])