* Closes#2902 - Migrate to systemd from supervisord
* Closes#2902 - Migrate to systemd from supervisord
* Update systemd unit and environment file
* Add gunicorn.conf
* Update documentation and CHANGELOG. Moved parameters around on service file
* Update Gitignore
* Rudimentary python3 support
* update docs and trigger Travis
* fix some of the tests
* fix all python3 errors
* change env calls to just python
* add @python_2_unicode_compatible decorator to models for python2 compatibility
* switch netbox.configuration to from netbox import configuration