- the previous CDN icon list url no longer works
- a list of all icons is mirrored to the JSDelivr CDN however
- there's no reason to set the engine to inactive now that we use public CDNs
Icons category makes sense because it allows to quickly search for free SVG
icons to use for websites / other designs with a quick `!icons` query
Icons don't seem to fit into the normal images category that well because icons
are quite a special type of images