bin: system: add "screens", refactor ~/.varia to XDG_CONFIG_HOME/dotfiles
add screens.laptop, screens.wix
bin: system: pass XDG_CONFIG_HOME to sudo
expand .gitconfig into .gitconfig.*
expand .config/awesome into .config/awesome.*
.xinitrc.laptop: add system screens, remove awesome workspace initialization
.xinitrc.wix: replace `wix-arrive` with `system screens`
.profile: add XDG_* variables, clean other variables
bin: install-user: refactor to use XDG_CONFIG_HOME, remove mkinstance, recoll
bin: system: also pass and use XDG_DATA_HOME
.xbindkeysrc: remove the function key shortcuts, they are not used, or implemented in kernel
bin: system: simplify net, refactor all to use VARIA
bin: system: now apply "don't repeat yourself"
bin: update-xinput: use XDG_CONFIG_HOME