- Deprecation warnings using Django 1.8 are resolved.
- Deprecation warnings using Django 1.11 are resolved.
- Admin: grappelli is no longer used.
- Upgrade to django-autocomplete-light v3 (v2 is not 1.11 compatible).
* autocomplete.modelform_factory being dropped, code uses dal Select2
views and widgets.
The `registration` view was referencing this file using
`"gestioncof/registration_form.html"` whereas the `registration_post`
templated was referencing it in the global namespace
`"registration_form.html"`.
We choose the `gestioncof/` folder in order to avoid further conflicts
with other apps.
