Create an example application about headway

[grantcolley]

1. create a custom model
2. create a navigation module, category and menu item for the application
3. create config for rendering a list of models
4. create config for rendering a custom model, including create, update and delete functionality
5. create workflow
6. create ability to bind the workflow to model config, including traversing up and down the workflow
7. create users, roles and permissions
8. create the ability to bind user permissions to the workflow and model config
9. create ability to capture history and render it
10. create audit trail