Fix all pep8 issues apart from:

1) tests/*
2) settings/*
3) urls.py
 ./okupy/urls.py:7:5: E128 continuation line under-indented for visual indent
 ./okupy/accounts/urls.py:9:5: E128 continuation line under-indented for visual indent
4) setup.py
 ./setup.py:14:80: E501 line too long (85 characters)
 ./setup.py:23:80: E501 line too long (93 characters)
 ./setup.py:32:80: E501 line too long (81 characters)