Loads the config-file

def load_config(self):
        """
        Loads the config-file
        """
        self.__config = {}

        # Parse sections, its options and put it in self.config.
        for section in self.sections:

            self.__config[section] = {}
            options = self.parser.options(section)

            # Parse options of each section
            for option in options:

                try:
                    opt = self.parser \
                        .get(section, option)
                    try:
                        self.__config[section][option] = literal_eval(opt)
                    except (SyntaxError, ValueError):
                        self.__config[section][option] = opt
                        self.log_output.append(
                            {"level": "debug",
                             "msg": "Option not literal_eval-parsable"
                                    " (maybe string): [{0}] {1}"
                                 .format(section, option)})

                    if self.__config[section][option] == -1:
                        self.log_output.append(
                            {"level": "debug",
                             "msg": "Skipping: [%s] %s" % (section, option)}
                        )
                except ConfigParser.NoOptionError as exc:
                    self.log_output.append(
                        {"level": "error",
                         "msg": "Exception on [%s] %s: %s"
                                % (section, option, exc)}
                    )
                    self.__config[section][option] = None