Updated README. Moved open things to Github issues.
The prototype app now provides a REST controller for CRUD operations on Person entities.

@EnableTransactionManagement was removed from PersistenceConfiguration, as MongoDB does not support transactions via a Spring Datasource and JTA is not available.
Corrected tiny bits in the README.
The PrototypeApplication class is now also a @Configuration bean factory to get IntelliJ recognise the JPA repositories right.
The root logger is now at level ERROR. Also logging.config was removed from application configuration as it only holds the default and produces an unnecessary warning.
Implemented a custom JPA repository for the Person entity and refactored the REST controller accordingly.
Fixed formatting error in README.
Renamed Ansible role 'java' -> 'java-8'.
Fixed typo in README.
Implemented a full fledged integration test module.
Minor corrections to README.
Integrated REST-assured framework for testing API endpoints.