Merge branch 'master' into ebaii-ngs-niveau2-prod

doc/configure_instance.rst

doc/mass_mailing.rst

src/strass/strass_app/forms.py

src/strass/strass_app/locale/en/LC_MESSAGES/django.po

src/strass/strass_app/locale/fr/LC_MESSAGES/django.po

...ss/strass_app/templates/strass_app/review_allocation.html

src/strass/strass_app/tests/test_mass_mailing.py

src/strass/strass_app/views.py