font: use system, dim colors
let's respect users' choice, and emulate the original light touch by
color. this removes the major source of current loaded assets size.
those don't have proper cjk font probably cannot read chinese anyway.
posts: choosing-distro: adjust package format section
posts: add choosing distro
masthead: lower nav font size
sass: adjust avatar position on top bar
move-to-xdavidwu-link: fix typo
posts: add move-to-xdavidwu-link
kubeadm-psp: add anno for seccomp
comments: matrix: add matrix: scheme link to rooms
css: comments: reduce size
css: comments: fix avatar shrink and space handling