fix type conversions

CMakeLists.txt

common/cpp/src/data_structs/data_structs.cpp

common/cpp/src/database/CMakeLists.txt

common/cpp/src/database/encoding.cpp

common/cpp/src/database/mongodb_client.h

common/cpp/src/http_client/curl_http_client.cpp

common/cpp/src/json_parser/rapid_json.cpp

common/cpp/src/system_io/system_io.cpp

consumer/tools/folder_to_db/unittests/test_folder_to_db.cpp

examples/pipeline/in_to_out/in_to_out.cpp

...ples/producer/dummy-data-producer/dummy_data_producer.cpp

receiver/src/data_cache.cpp

...er/src/receiver_data_server/net_server/rds_tcp_server.cpp

receiver/src/receiver_error.h

receiver/src/statistics/statistics.cpp

receiver/unittests/test_datacache.cpp

tests/automatic/common/cpp/include/testing.h

tests/automatic/common/cpp/src/testing.cpp

tests/automatic/consumer/consumer_api/consumer_api.c

...utomatic/producer/beamtime_metadata/beamtime_metadata.cpp