Comments module is empty and visible after removing the topic

[frandiox]

When removing a topic used by this plugin, the comments module will still appear as activated but empty in the blog. I think it should display again the "Publish this article to NodeBB" button instead. The way to do it manually is removing the keys stored in blog-comments hash in Redis (HDEL blog-comments key).

Usually there is no need to remove a topic and all its comments but I was testing in localhost and had some troubles with it.

[doppioslash]

+1 a fix would be good