first step of semantic tree, just to save. it will not be used as this in this project.
from django.contrib import admin
from django.contrib.auth.admin import UserAdmin as AuthUserAdmin
from django.utils.translation import gettext_lazy as _
from p4l.models import User
from p4l.forms import UserChangeForm, UserCreationform
class UserAdmin(AuthUserAdmin):
form = UserChangeForm
add_form = UserCreationform
fieldsets = tuple(list(AuthUserAdmin.fieldsets) + [(_('language'), {'fields':('language',)})])
admin.site.register(User, UserAdmin)