Fix Django sites with manage.py symlinks or similar unconventional configurations

[monokrome]

There is an issue where manage.py can not be detect as a symlink because find -f doesn't find it.

Some Django projects also don't use manage.py, as createproject can take different templates for starting projects. Some people (myself included) create Django projects from scratch.

In order to support this, would it be considered if I wanted to implement a way to provide a custom Django management command via environment variables?