nk20 v2.0.0 with django 4.2

I start a migration to python3.11 (debian Bookworm) and django 4.2 (#123 (closed)). It pass tests but:

• linters fail because of a breaking change fix, and I'm not sure how to fix it
• i'm note sure that there is no bug, so additionnal tests are needed
• documentation update is needed
• i had to remove CAS (and htcpcp-tea) which are not compatible with django 4.2. Maybe found a solution for the CAS (the only use is belenios, maybe another authentification is possible)
• OAuth secret are now hashed, check are needed before an irreversible action
• maybe there are no more used/not optimal code

Moreover, because it's an important update, I think it could be v2.0.0 of the "note kfet 2020":

• we can publish a v1.1.0 with the version before migration if someone want to use a release with django2.2
• someone has a version name idea ?
• some additional change could be made (see milestone %"nk20 v2.0.0 with django 4.2" , feel free to add tickets)

apps/activity/forms.py

@@ -4,13 +4,14 @@
 from datetime import timedelta
 from random import shuffle
 
+from bootstrap_datepicker_plus.widgets import DateTimePickerInput
 from django import forms
 from django.contrib.contenttypes.models import ContentType
 from django.utils import timezone
 from django.utils.translation import gettext_lazy as _
 from member.models import Club
 from note.models import Note, NoteUser
-from note_kfet.inputs import Autocomplete, DateTimePickerInput
+from note_kfet.inputs import Autocomplete
 from note_kfet.middlewares import get_current_request
 from permission.backends import PermissionBackend