def load_config_file(config_file):
    """ Loads the given file into a list of lines

    :param config_file: file name of the config file
    :type config_file: str

    :return: config file as a list (one item per line) as returned by open().readlines()
    """
    with open(config_file, 'r') as f:
        config_document = f.readlines()
    return config_document