Refactoring

* splits ema/models.py into subpackage
* splits konova/models.py into subpackage
* splits user/models.py into subpackage

konova/models/geometry.py

@@ -0,0 +1,18 @@
+"""
+Author: Michel Peltriaux
+Organization: Struktur- und Genehmigungsdirektion Nord, Rhineland-Palatinate, Germany
+Contact: michel.peltriaux@sgdnord.rlp.de
+Created on: 15.11.21
+
+"""
+from django.contrib.gis.db.models import MultiPolygonField
+
+from konova.models import BaseResource
+
+
+class Geometry(BaseResource):
+    """
+    Outsourced geometry model so multiple versions of the same object can refer to the same geometry if it is not changed
+    """
+    from konova.settings import DEFAULT_SRID
+    geom = MultiPolygonField(null=True, blank=True, srid=DEFAULT_SRID)