Linkage improvement

* adds linking to submenus
* adds PaymentAdmin
* adds Meta class inheritance for tables

konova/forms.py

@@ -9,6 +9,8 @@ Created on: 16.11.20
 from abc import abstractmethod
 
 from django import forms
+from django.contrib.auth.models import User
+from django.utils import timezone
 from django.utils.translation import gettext_lazy as _
 
 
@@ -84,10 +86,11 @@ class RemoveForm(BaseForm):
     def is_checked(self) -> bool:
         return self.cleaned_data.get("check", False)
 
-    def save(self):
+    def save(self, user: User):
         if self.object_to_remove is not None and self.is_checked():
             self.object_to_remove.is_active = False
-            self.object_to_remove.is_deleted = True
+            self.object_to_remove.deleted_on = timezone.now()
+            self.object_to_remove.deleted_by = user
             self.object_to_remove.save()
         return self.object_to_remove