Backport support for global and object event notification. GitLab issue #262.

Signed-off-by: Roberto Rosario <roberto.rosario.gonzalez@gmail.com>

mayan/apps/checkouts/apps.py

@@ -10,11 +10,17 @@ from django.utils.translation import ugettext_lazy as _
 
 from acls import ModelPermission
 from common import MayanAppConfig, menu_facet, menu_main, menu_sidebar
+from common.classes import DashboardWidget
 from common.dashboards import dashboard_main
+from events import ModelEventType
 from mayan.celery import app
 from rest_api.classes import APIEndPoint
 
 from .dashboard_widgets import widget_checkouts
+from .events import (
+    event_document_auto_check_in, event_document_check_in,
+    event_document_check_out, event_document_forceful_check_in
+)
 from .handlers import check_new_version_creation
 from .links import (
     link_checkin_document, link_checkout_document, link_checkout_info,
@@ -72,6 +78,13 @@ class CheckoutsApp(MayanAppConfig):
             )
         )
 
+        ModelEventType.register(
+            model=Document, event_types=(
+                event_document_auto_check_in, event_document_check_in,
+                event_document_check_out, event_document_forceful_check_in
+            )
+        )
+
         ModelPermission.register(
             model=Document, permissions=(
                 permission_document_checkout,