Include user upvoted / downvoted

[Dessix]

In the user preferences menu, there's a "make my votes public" option. I imagine logging in as the user would be easier than trying to archive them with only public data, but this should be sufficient as-is to allow access to /user/<name>/upvoted and /user/<name>/downvoted.

[xavdid]

Sure, this would work similarly to #2. It's straightforward to import them from the archive. Polling them from the live site is trickier, but doable.

I have some other work I want to prioritize first, but I can likely add this as well (especially if other people 👍 it)