working pool for dataserver

...a_server/receiver_data_server_request_handler_factory.cpp

...ata_server/receiver_data_server_request_handler_factory.h

receiver/src/receiver_data_server/request.cpp

receiver/src/receiver_data_server/request_pool.cpp

receiver/src/receiver_data_server/request_pool.h

receiver/src/receiver_data_server/tcp_server.cpp

receiver/src/receiver_data_server/tcp_server.h

receiver/src/request.cpp

receiver/src/request.h

receiver/src/request_handler.h

receiver/src/request_handler_authorize.h

receiver/src/request_handler_db_write.h

receiver/src/request_handler_file_write.h

receiver/unittests/mock_receiver_config.cpp

...ttests/receiver_data_server/receiver_dataserver_mocking.h

...ttests/receiver_data_server/test_receiver_data_server.cpp

receiver/unittests/receiver_data_server/test_tcp_server.cpp

receiver/unittests/test_config.cpp

receiver/unittests/test_request.cpp

tests/automatic/settings/receiver.json.tpl.lin