Dreipol-django-fagungis

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* added support for django 1.7 with the env property env.django_version
* updated support for gunicorn
* improved directory permissions

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* fixing a crash when local nginx conf file not set

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* added support for different local nginx conf file

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* fixes bug with supervisor configuration management

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* now we export the PYTHONPATH in order to set settings option in the sh script for supervisor

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* improved compatibility with default django 1.4 project structure
* added django_project_settings to gunicorn_django options