As long as the bytes literal contains only ASCII data it can be replaced
with a string literal already in Python 2.
https://docs.djangoproject.com/en/1.11/topics/python3/#unicode-literals
The following command was used to generate this patch:
```
sed -i "s/b'\([\x00-\x7F]*\)'/'\1'/g" network/base/migrations/*
```
Similar commit in db: librespacefoundation/satnogs/satnogs-db@f0c0c9bc
Signed-off-by: Fabian P. Schmidt <kerel@mailbox.org>
Fabian P. Schmidt