move to python3 for more features

I think it's time to upgrade the source code to python3 and django3.

upgrading is always a good choice in software development. (I know it's not always good in system administration and you should stick to the most reliable and stable one). but Django 3.2 is out and it's LTS, so ...

Recently I'm trying Django and I completely agree with F4R4N.

Is there any plan or idea to refactor the project to Python3?