Improved token handling

.env.unix.example

fda-authentication-service/dbrepo-realm.json

fda-broker-service/Dockerfile

fda-broker-service/docker-entrypoint.sh

fda-broker-service/init.py

fda-broker-service/init.sh

fda-container-service/Dockerfile

...ce/rest-service/src/main/resources/application-docker.yml

...r-service/rest-service/src/main/resources/application.yml

fda-database-service/Dockerfile

...ice/src/main/java/at/tuwien/endpoints/AccessEndpoint.java

...e/src/main/java/at/tuwien/endpoints/DatabaseEndpoint.java

...ce/rest-service/src/main/resources/application-docker.yml

...e-service/rest-service/src/main/resources/application.yml

...src/main/java/at/tuwien/gateway/BrokerServiceGateway.java

...java/at/tuwien/gateway/impl/BrokerServiceGatewayImpl.java

.../src/main/java/at/tuwien/service/MessageQueueService.java

...main/java/at/tuwien/service/impl/RabbitMqServiceImpl.java

fda-identifier-service/Dockerfile

...src/main/java/at/tuwien/endpoints/IdentifierEndpoint.java