Merge pull request 'Fix geometry conflict message' (#211) from hotfix_geom_conflict_msg_with_deleted_entry into master

Reviewed-on: SGD-Nord/konova#211

konova/models/object.py

@@ -698,18 +698,16 @@ class GeoReferencedMixin(models.Model):
             return request
 
         instance_objs = []
-        add_message = False
         conflicts = self.geometry.conflicts_geometries.all()
 
         for conflict in conflicts:
             instance_objs += conflict.affected_geometry.get_data_objects()
-            add_message = True
 
         conflicts = self.geometry.conflicted_by_geometries.all()
         for conflict in conflicts:
             instance_objs += conflict.conflicting_geometry.get_data_objects()
-            add_message = True
 
+        add_message = len(instance_objs) > 0
         if add_message:
             instance_identifiers = [x.identifier for x in instance_objs]
             instance_identifiers = ", ".join(instance_identifiers)