[Discussions plugin] Option to hide categories

[lowlighter]

Discussed in #742

^{Originally posted by Andre601 January 6, 2022}
Loving the plugin for showing discussion related stats, but one thing I kinda dislike is the fact, that the categories listed can't be hidden/removed.

Because of this would I like to suggest such a feature to be implemented, since it could become quite a large SVG when responding to a lot of different categories.