* upgrade to spring boot 1.5.2
* add full update to REST API
* modify ratings controller
* upgrade herold
* fix integration test
* fix integration test
* minor fix
* fix integration test
* fix integration test
* minor cleanup
* minor cleanup
* remove log4j properties
* use standard logbook.xml
* remove log4j dependencies
* remove commons-logging
* merge
* fix conflict
* exclude commons-logging dependency
* cleanup
* minor fix
* minor fix
* upgrade to spring boot 1.5.2
* add full update to REST API
* modify ratings controller
* upgrade herold
* fix integration test
* fix integration test
* minor fix
* fix integration test
* fix integration test
* minor cleanup
* minor cleanup
* remove log4j properties
* use standard logbook.xml
* upgrade to spring boot 1.5.2
* add full update to REST API
* modify ratings controller
* upgrade herold
* fix integration test
* fix integration test
* minor fix
* fix integration test
* fix integration test
* minor cleanup
* minor cleanup
* remove log4j properties