single sender/receivee bugfixes

.idea/runConfigurations/OBSW_TmTcClient_GUI.xml

.idea/runConfigurations/tmtcclient_Listener_Serial.xml

...a/runConfigurations/tmtcclient_Single_Command_Serial_.xml

comIF/obsw_com_interface.py

comIF/obsw_dummy_com_if.py

comIF/obsw_ethernet_com_if.py

comIF/obsw_serial_com_if.py

config/obsw_config.py

obsw_tmtc_client.py

sendreceive/obsw_command_sender_receiver.py

sendreceive/obsw_single_command_sender_receiver.py

sendreceive/obsw_tm_listener.py

tc/obsw_pus_tc_base.py

test/obsw_module_test.py

tm/obsw_pus_tm_base.py

tm/obsw_pus_tm_factory.py

utility/obsw_args_parser.py

utility/obsw_tmtc_printer.py