Permission rethinking

* No detailed permissions due to django constraints on model-based permissions
* instead: logic controlled permission by group membership
* adds translations

konova/management/commands/setup_data.py

@@ -7,6 +7,8 @@ Created on: 15.12.20
 """
 from django.utils.translation import gettext_lazy as _
 
+from konova.settings import DEFAULT_GROUP, ZB_GROUP, ETS_GROUP
+
 TEST_ORGANISATION_DATA = [
         {
             "name": "Test_Official_1",
@@ -24,12 +26,12 @@ TEST_ORGANISATION_DATA = [
 
 GROUPS_DATA = [
         {
-            "name": _("Default"),
+            "name": DEFAULT_GROUP,
         },
         {
-            "name": _("Registration office"),
+            "name": ZB_GROUP,
         },
         {
-            "name": _("Conservation office"),
+            "name": ETS_GROUP,
         },
     ]