Since we now use dotter we can simplify the dir structure for
qutebrowser a lot. Everything dot-filed earlier can now reside
in simple directories called config (for ~/.config/qutebrowser),
data (for ~/.local/share/qutebrowser), and scripts
(for ~/.local/bin) files.
Everything that is in the repo should be listed in the global.toml
file. The local.toml file then picks the stuff to actually
write. For systemwide packages, a systemwide.toml (local) file
is used instead.