All sorts of nasty hacks.

1) Install supervisor via pip, not apt.  This is nicer and more
reliable, but it also changes a lot of the default paths and
directories.  Bah.

2) Add some extra hackies so we don't have to run everything as root.

3) Adding an init script compatible with the pip version of supervisor.

4) Rename our logfiles so we don't have to struggle with managing the
directories' permissions.