Merge branch 'master' into remove-todo-use-new-statistic-dsl

# Conflicts:
#	alfa-service/src/main/java/de/ozgcloud/alfa/statistic/StatisticMapper.java
#	alfa-service/src/main/java/de/ozgcloud/alfa/statistic/StatisticRemoteService.java
#	alfa-service/src/main/java/de/ozgcloud/alfa/statistic/StatisticService.java
#	alfa-service/src/test/java/de/ozgcloud/alfa/statistic/GrpcVorgangCountTestFactory.java
#	alfa-service/src/test/java/de/ozgcloud/alfa/statistic/StatisticRemoteServiceTest.java
#	alfa-service/src/test/java/de/ozgcloud/alfa/statistic/StatisticServiceTest.java