DOC: Added copyright notices.

...sdb/server/database/backend/interfaces/ListRolesImpl.java

...sdb/server/database/backend/interfaces/ListUsersImpl.java

...er/database/backend/interfaces/RetrieveEntityACLImpl.java

...caosdb/server/database/backend/transaction/ListRoles.java

...caosdb/server/database/backend/transaction/ListUsers.java

...sdb/server/database/backend/transaction/LogUserVisit.java

...ase/backend/transaction/RetrieveEntityACLTransaction.java

...rver/database/backend/transaction/UpdateSparseEntity.java

.../server/database/backend/transaction/UpdateUserRoles.java

...main/java/org/caosdb/server/database/proto/ProtoUser.java

src/main/java/org/caosdb/server/entity/Message.java

...aosdb/server/grpc/AccessControlManagementServiceImpl.java

src/main/java/org/caosdb/server/grpc/AuthInterceptor.java

...n/java/org/caosdb/server/grpc/CaosDBToGrpcConverters.java

.../org/caosdb/server/grpc/EntityTransactionServiceImpl.java

src/main/java/org/caosdb/server/grpc/GRPCServer.java

...n/java/org/caosdb/server/grpc/GeneralInfoServiceImpl.java

...n/java/org/caosdb/server/grpc/GrpcToCaosDBConverters.java

src/main/java/org/caosdb/server/permissions/EntityACI.java

src/main/java/org/caosdb/server/permissions/EntityACL.java