Simplify json response example and add an example of serializing a Java object
Merge pull request #3144 from benmccann/json-docs

Simplify json response example and add an example of serializing a Java object
Rename JavaJsonRequests documentation to JavaJsonActions. The current name is quite confusing because it also deals heavily with json responses
Merge pull request #3145 from benmccann/json-docs-rename

Rename JavaJsonRequests documentation to JavaJsonActions
Improve Java Json documentation