light/dark: persistent config

reload disqus on light/dark change

css: dark/light: restrict to the container div

impl lightmode button

add yet another div for css hack selection

move body, html colors to top-flex

move top flex to own div for matching by darkmode

add darkmode switch without js

force expand width

make back-to-top in archives really to top

input: search: remove webkit cancel button

The search is real-time and cancel button shoud not benifit much
Disabling it makes the search consistent across browsers

fix centering when wide

reduce div on search

bump arch-linux-install

sidebar: fix top amount

sidebar: dropdown: move indicator to the right

theme: light: fix highlight w background

footer: follow: stop SCREAMING

footer: follow: move to flexbox

trim unwanted whitespaces on footer