The DirectMailUtil needs to support passing extra context
before this can be considered functional.

DOIs for Reports and Comments which relate to published
objects (at SciPost or elsewhere) to now make use of
Crossref's peer review content.

If you are updating on a machine please follow these steps
*BEFORE* updating your code to this commit.

If you are installing on a fresh database and do not need to think
about existing data, ignore the following and proceed as usual.

1. Run the following migrations:
```
python manage.py migrate --fake scipost zero
python manage.py migrate --fake notifications zero
python manage.py migrate --fake partners zero
python manage.py migrate --fake affiliations zero
python manage.py migrate --fake commentaries zero
python manage.py migrate --fake comments zero
python manage.py migrate --fake finances zero
```

2. *** NOW UPDATE/PULL GIT ***
3. Run: `python manage.py migrate --fake-initial`