Do not rely on external ldp packages declared in settings

I have an issue where an instance is using community but doesn't want the project.

This makes the djangoldp server fail on a missing INSTALLED_APP due to https://git.startinblox.com/djangoldp-packages/djangoldp-community/blob/master/djangoldp_community/models.py#L17

Is it possible to:

• avoid the requirement of those models
• or make the requirements explicit in the setup.cfg so they are handled automatically ?