Add Tags support to Discourse integration

@mdubakov I know this is almost certainly a low priority, but I was also hoping it would at least be one of either A: something that could be implemented quickly, or B: something that could be answered quickly with a reason why not. :wink: And I hate to do it, but you did promise some improvements in response time…

Maybe @Chr1sG has some thoughts now that he’s on the inside? :grin: