Tells you what channels are currently ignored in this server.

async def ignore_list(self, ctx):
        """Tells you what channels are currently ignored in this server."""

        ignored = self.config.get('ignored', [])
        channel_ids = set(c.id for c in ctx.message.server.channels)
        result = []
        for channel in ignored:
            if channel in channel_ids:
                result.append('<#{}>'.format(channel))

        if result:
            await self.bot.responses.basic(title="Ignored Channels:", message='\n\n{}'.format(', '.join(result)))
        else:
            await self.bot.responses.failure(message='I am not ignoring any channels here.')