Allow category moderators to manage sub-categories

[tobiaseigen]

Anton, you really seem to care about this topic! The last four posts are from you. Please be patient. This topic is indeed on our radar but this project is just kicking off:

@lindsey

Category improvements

We are beginning a project around simplifying category setup to make it easier to expand your existing community or start a new one. This work includes streamlining the creation of use-case based categories, such as those for questions / answers, feature ideas, and documentation. In parallel, we will polish the end user experience for these categories types and their associated plugins (e.g., Solved, Topic Voting, Docs Categories, etc.).