Requirements missing dj-database-url

[mikhail]

When installing the requirements (automated via heroku in my scenario) the install fails with

ImportError: No module named dj_database_url

This can be resolved by adding:

'dj-database-url': 'dj-database-url>=0.3.0',

to askbot/__init__.py inside of the REQUIREMENTS = { block.

[sebastian-philipp]

I'd like to move to https://github.com/joke2k/django-environ in order to properly make container images that don't require users to look at the settings.py

[martin-bts]

Currently, we install dj-database-url through askbot_requirements.txt and our Docker images rely on this library. I think we should add

'dj_database_url': 'dj-database-url',

to askbot/__init__.py inside of the REQUIREMENTS = { block. At least as a short term solution.

@evgenyfadeev What do you think?