Fix bug introduced in c0f7b43 that stopped the sourcing of coc.nvim in
neovim.
Add command to the dotbot installation config to install coc.nvim
automatically after pulling its submodule.
Move everything that is desirable independent of the WM or shell into
xinitrc.
Move .Xresources and .Xmodmap into .config/X11.
Remove all unneeded GNOME bits from i3 config.
Make compositor launch script portable.
Add locker symlink and launch.sh similar to the compositor.
Move long commands from the dotbot config into own scripts to keep the
install.conf.yaml more readable.
Fix bug that the submodule init step fails when already done once since
then the grep statement fails because there is no output.