'Update the phone book dictionary.'

@Throttle(MIN_TIME_PHONEBOOK_UPDATE)
def update_phonebook(self):

    self.phonebook_dict = self.fph.get_all_names(self.phonebook_id)
    self.number_dict = {re.sub('[^\\d\\+]', '', nr): name for (name, nrs) in self.phonebook_dict.items() for nr in nrs}
    _LOGGER.info('Fritz!Box    phone    book    successfully    updated')
