Fallback to fieldname if alias is empty

Author: manisandro

src/config_generator/qgs_reader.py

@@ -341,7 +341,7 @@ def __layer_edit_metadata(self, root, layer_metadata, maplayer, layername, map_p
             field = {}
 
             # Alias
-            field['alias'] = alias.get('name')
+            field['alias'] = alias.get('name') or fieldname
 
             # Default value
             field['defaultValue'] = element_attr(