Refactoring

* splits compensation/models.py into subpackage
* renames base objects by adding suffix Mixin

intervention/models/intervention.py

@@ -5,6 +5,8 @@ Contact: michel.peltriaux@sgdnord.rlp.de
 Created on: 15.11.21
 
 """
+import shutil
+
 from django.contrib.auth.models import User
 from django.db import models, transaction
 from django.db.models import QuerySet
@@ -15,13 +17,13 @@ from intervention.models.legal import Legal
 from intervention.models.responsibility import Responsibility
 from intervention.models.revocation import RevocationDocument
 from intervention.utils.quality import InterventionQualityChecker
-from konova.models import generate_document_file_upload_path, AbstractDocument, Geometry, BaseObject, ShareableObject, \
-    RecordableObject, CheckableObject
+from konova.models import generate_document_file_upload_path, AbstractDocument, Geometry, BaseObject, ShareableObjectMixin, \
+    RecordableObjectMixin, CheckableObjectMixin
 from konova.settings import LANIS_LINK_TEMPLATE, LANIS_ZOOM_LUT, DEFAULT_SRID_RLP
 from user.models import UserAction, UserActionLogEntry
 
 
-class Intervention(BaseObject, ShareableObject, RecordableObject, CheckableObject):
+class Intervention(BaseObject, ShareableObjectMixin, RecordableObjectMixin, CheckableObjectMixin):
     """
     Interventions are e.g. construction sites where nature used to be.
     """
@@ -251,7 +253,6 @@ class InterventionDocument(AbstractDocument):
         if folder_path is not None:
             try:
                 shutil.rmtree(folder_path)
-                pass
             except FileNotFoundError:
                 # Folder seems to be missing already...
                 pass