Consider replacing Springfox and Swagger with Spring RESTDocs

[fastnsilver]

The advantages are less annotation pollution in Controller impls, less third-party dependencies, and build time (i.e., test failures) feedback from incorrect documentation (as in fluid style assertions).

More reading:

• http://docs.spring.io/spring-restdocs/docs/1.1.1.RELEASE/reference/html5/#documenting-your-api
• https://github.com/andreasevers/spring-restdocs-demo-spring-one-platform-2016/blob/master/sop16-demo/src/test/java/com/example/SOP16DemoTestApplicationTests.java

[fastnsilver]

Last commit fulfills this.