+ Added "Edu" section in navbar
+ Bug fixes

Bug fixes:
+ Dark mode was being weird for some reason
+ Various improvements for twin standings and updating standings

Fixes:
+ Twin standings now link to the right "Problems" page
+ Finder updates order/priority correctly in the browser extension
+ Allow keys without modifiers to be used as shortcuts. For example, "D" can be used to toggle dark mode, without the need for "Ctrl+D" or "Shift+D".

New features:
+ Tutorial spoilers (you can hover the black boxes to show the text behind it)
+ Twin standings: show both div1 and div2 standings in the same page

Added "tabs" permission to propagate changes in the extension popup to all tabs