kbin-dropdown: replace profile page scrolling links with dropdown menu

This userscript replaces the superlong scrolling marquee of links on profile pages with a selection dropdown so that you can easily navigate to submitted posts, comments, followers, etc. Works on any profile page including your own.

Before
After

Requires monkey extension to run (greasemonkey, tampermonkey, violentmonkey, et al)

Edit: previous bugs should be fixed on all versions now