Merge pull request #80 from ostcar/master

pep8, django1.5 and smal fix
Some fixes. Update requirements.txt and setup.py.
Set to Django 1.5c1
Merge pull request #81 from normanjaeckel/Fixes_2

Some fixes. Update requirements.txt and setup.py.
Set next release to 1.4. Added 1.3.1 CHANGELOG from stable/1.3.x branch
Update requirements: set version of coverage to 3.6
Merge pull request #83 from normanjaeckel/master

Update requirements
Add an option to suppress starting of web browser (closes #436)
Merge pull request #86 from andkit/no_browser

Add an option to suppress starting of web browser (closes #436)