Replace ugettext_lazy by gettext_lazy. Advances AlekSIS#224

aleksis/apps/chronos/menus.py

-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 
 MENUS = {
     "NAV_MENU_CORE": [

aleksis/apps/chronos/models.py

@@ -15,7 +15,7 @@ from django.http.request import QueryDict
 from django.urls import reverse
 from django.utils import timezone
 from django.utils.decorators import classproperty
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 
 from calendarweek.django import CalendarWeek, i18n_day_names_lazy, i18n_day_abbrs_lazy
 from colorfield.fields import ColorField

aleksis/apps/chronos/tables.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 
 from typing import Optional
 
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 
 import django_tables2 as tables
 from django_tables2.utils import A