flake8: cleanup manage.py
flake8: tasks.py
flake8: config/default.py.dist
flake8: migrations/env.py
flake8: database, forms, init, models

There is one issue left with models about an unknown
vairable. An issue has been opened to resovle that problem
flake8: util
flake8: controllers/api
flake8: controllers - category, general, report
Merge pull request #29 from orvsd/code_cleanup_08-01-2014

Flake8 cleanup
run_tests: new manage.py command

refs #18
pep8 cleanup

refs #18