made testing suite for config_file more robust
before splitting config_file to own test suite
split conf_reader and mineos test suite
renamed testing to test_mineos.py to keep visual separation of functionality
created a few mineos test functions
again retuned config_file (sections: getandset)
more and more and more tuning of config_file
updated create_{sp,sc} to use config_file 'with' context manager
made NICE_VALUE constant
additional config tests