To see the problem:

1. Access the admin appl. user name: admin, password: admin123
2. Click on the Document link
3. Either add a new Document, or click on the 'fred' document
4. Select an item in the Pets list - note that the controls for the widget actiavate
5. Select an item in the Pet Names list - not that the controls for the widget are not activated.
6. Go back to the main admin menu, and select MetaData
7. Change the name 'Pet Names' to Pet_Names
8 repeat steps 4 and 5, except that now the widget controls will be activated for Pets_Names.

Tested with Python 3.4.3 and django 2.0.5. See the requirements.txt file for other stuff.

