Reworked to use Spring Data REST and persistence based on Hibernate/JPA and the in-memory HyperSQL DataBase.
Just Jason/HAL API but now HATEOAS.
Added support for Heroku deployment.
Started combining RESTful JSON API with integrated Controller and JSP views for HTML content.
Keeping RESTful API from "/" separate from HTML one at "html".
TODO: solve redirection issues when content is HTML. Solve issue Spring Data REST API not consuming form-encoded input.