Permission rethinking

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

konova/models.py

@@ -7,7 +7,7 @@ Created on: 17.11.20
 """
 import uuid
 
-from django.contrib.auth.models import User, Group
+from django.contrib.auth.models import User
 from django.contrib.gis.db.models import MultiPolygonField
 from django.db import models
 
@@ -43,25 +43,6 @@ class BaseObject(BaseResource):
         abstract = True
 
 
-class KonovaPermission(models.Model):
-    """
-    Custom permissions for konova
-
-    """
-    name = models.CharField(max_length=255, blank=False, null=False)
-    description = models.TextField()
-    is_active = models.BooleanField(default=True)
-
-
-class KonovaGroup(models.Model):
-    """
-    Custom group model
-
-    """
-    name = models.CharField(max_length=255, null=False, blank=False)
-    permissions = models.ManyToManyField(KonovaPermission)
-
-
 class Deadline(BaseResource):
     """
     Defines a deadline, which can be used to define dates with a semantic meaning