vim: Add jade and purescript vim bundles
bash: Add systemd to list of ignored processes
bash: Rework virtualenv handling

It did not properly support python venvs, setting a variable wrong.
It now spawns a subshell with a modified environment. To deactivate, you
can now just quit the shell.
git: Default to all branches in log, but allow customisations
git: add alias for fetching github pull requests
i3: Teach background script the -o/--once option
i3: Dont bother spawning a scratchpad window
i3: Use volumeicon instead of xfce4-volumed
vim: remove unnessecary erlang-specific syntax file
vim: Change text wrapping options
vim: blah
ncmpcpp: ignore artist docs