Cleanups

I played with the code checking tool (pylint){[http://www.pylint.org/] on the projector app

@normanjaeckel lets talk about it.

**update:** I used (flake8)[https://pypi.python.org/pypi/flake8] instead of pep8 and reordered the imports with the tool [isort](https://github.com/timothycrosley/isort).