Make Users ReST

[sigkillchris]

Not sure if this is possible or a good idea? May require research into other parts of spring(boot?)

https://github.com/adc40/SpringMVCSchoolLibraryWebApp/blob/master/java/com/springapp/mvc/BookController.java

https://github.com/VolleyTKE/pantryitemservice/blob/master/src/main/java/com/cvg/controller/ItemController.java