www/py-django-star-ratings: Update to 0.9.1

• Assign the port to Django 2.2 (current LTS release) as well because Django 1.11 is End-of-Life since April.

• Do the same for its dependencies and bump PORTREVISION accordingly. [1]

• Mark the repo-copied ports www/py-dj22-django-model-utils and py-dj22-swapper as deprecated because they're obsolete now. [1]

Changelog:

https://github.com/wildfish/django-star-ratings/blob/0.9.1/CHANGELOG.txt

PR: 245905
Approved by: Kevin Golding (maintainer), maintainer timeout (14 days) [1]