#31 API POST Compensation

* adds support for POST of new compensations
* adds shared_users property to BaseObject and Compensation to simplify fetching of shared users (Compensation inherits from intervention)
* extends compensation admin index
* modifies compensation manager which led to invisibility of deleted entries in the admin backend
* fixes bug in sanitize_db.py where CREATED useractions would be removed if they are not found on any log but still are used on the .created attribute of the objects

api/utils/serializer/v1/intervention.py

@@ -46,16 +46,18 @@ class InterventionAPISerializerV1(AbstractModelAPISerializerV1):
         Returns:
             obj (Intervention)
         """
+        create_action = UserActionLogEntry.get_created_action(user, comment="API Import")
         # Create geometry
         json_geom = self.create_geometry_from_json(json_model)
         geometry = Geometry()
         geometry.geom = json_geom
+        geometry.created = create_action
 
         # Create linked objects
         obj = Intervention()
         resp = Responsibility()
         legal = Legal()
-        created = UserActionLogEntry.get_created_action(user, comment="API Import")
+        created = create_action
         obj.legal = legal
         obj.created = created
         obj.geometry = geometry
@@ -131,6 +133,7 @@ class InterventionAPISerializerV1(AbstractModelAPISerializerV1):
             obj.save()
 
             obj.users.add(user)
+            obj.log.add(obj.created)
 
             celery_update_parcels.delay(obj.geometry.id)