Nice work 
Category settings tip
Instead of making admins enter category slugs, you can use this in your settings.yml file, for example:
categories_to_hide:
type: list
list_type: category
default: ""
description:
en: "Categories to hide from sidebar completely."
which will give you a setting like this:
You can also do the same thing with groups if you ever want to do a group drop down:
groups_this_setting_applies_to:
type: list
list_type: group
default: ""
description:
en: "Groups this setting will apply to."
which will give something like this:
