Login required on modals

* adds new login_required_modal decorator
    * can be used before regular login_required decorator to return a proper session-timed-out message

intervention/views/compensation.py

@@ -12,11 +12,12 @@ from django.shortcuts import get_object_or_404
 from django.urls import reverse
 
 from intervention.models import Intervention
-from konova.decorators import shared_access_required
+from konova.decorators import shared_access_required, login_required_modal
 from konova.forms.modals import RemoveModalForm
 from konova.utils.message_templates import COMPENSATION_REMOVED_TEMPLATE
 
 
+@login_required_modal
 @login_required
 @shared_access_required(Intervention, "id")
 def remove_compensation_view(request: HttpRequest, id: str, comp_id: str):