Add 'django' and 'django-cms' as requirements into setup.py file

[DmytroLitvinov]

Hi there,

Just because that package requires django and djangocms, I guess we need to add these packages as a requirement to setup.py file.

[fsbraun]

Actually, django CMS would not be necessary if someone just wanted a django CMS-like Django admin?

[fsbraun]

Solved in version 3.2.6