Fixed Ubuntu setup scripts and configurations

In the transition to Django 1.7, some of the Ubuntu configuration
files fell out of date. This commit fixes most of the probelms.

- Removed the tar archive that contained the WSGI script and redwood config
- Updated WSGI script for Django 1.7
- moved apache specific configurations to install/ubuntu/apache
- kept webserver independent configurations in install/ubuntu
- made setup script on downloads from the RedwoodResources repository