This fixes an issue where provision would fail if the user's home
directory was setup in such a way that the postgres user couldn't
access it (and thus the `sudo` command here would throw errors about
having a non-readable current working directory).
This directory contains scripts that are used in building, managing,
testing, and other forms of work in a Zulip development environment.
Note that tools that are also useful in production belong in
scripts/ or should be Django management commands.