Merge branch 'network' into 'master'

.gitlab-ci.yml

core/out/production/resources/META-INF/persistence.xml

...xytrucker/galaxytruckerreloaded/Communication/Client.java

...rreloaded/Communication/ClientControllerCommunicator.java

...galaxytrucker/galaxytruckerreloaded/Model/Map/Planet.java

...c/com/galaxytrucker/galaxytruckerreloaded/Model/Ship.java

...cker/galaxytruckerreloaded/Model/ShipLayout/ShipType.java

...c/com/galaxytrucker/galaxytruckerreloaded/Model/User.java

...xytrucker/galaxytruckerreloaded/Server/ClientHandler.java

...xytrucker/galaxytruckerreloaded/Server/RequestObject.java

...laxytrucker/galaxytruckerreloaded/Server/RequestType.java

...ytrucker/galaxytruckerreloaded/Server/ResponseObject.java

...om/galaxytrucker/galaxytruckerreloaded/Server/Server.java

...laxytruckerreloaded/Server/ServerServiceCommunicator.java

...ruckerreloaded/Test/Server/Persistence/PlanetDAOTest.java

...ruckerreloaded/Test/Server/Persistence/TraderDAOTest.java

core/src/main/resources/META-INF/persistence.xml

database.mv.db