Merge branch 'f-grpc-dev' into f-grpc-f-grpcweb

CHANGELOG.md

README_SETUP.md

conf/core/server.conf

src/doc/specification/Authentication.md

src/doc/specification/Authentication.rst

src/main/java/org/caosdb/server/CaosDBServer.java

src/main/java/org/caosdb/server/ServerProperties.java

...atabase/backend/transaction/InsertTransactionHistory.java

...se/backend/transaction/RetrieveFullEntityTransaction.java

...ain/java/org/caosdb/server/datatype/DateTimeDatatype.java

.../java/org/caosdb/server/jobs/core/RetrieveIdOnlyFlag.java

src/main/java/org/caosdb/server/query/Query.java