added dependencies to pom.xml
created copie of dozer mapping to resources (according to maven structure) -> should be used as the mapping file in the future
removed possible null pointer; made use of Dozer Singleton Wrapper (according to documentation)
removed list of Root entities because yamlbeans can't choose the correct child class of Root dynamically... need another solution for parsing
added method to set config for yaml reader/writer
added assert to proof correct parsing
added test for dozer bean converting