updated example_app settings.py, manage.py and directory structure to Django 1.4
updated example_app_requirements.txt to refer to github instead of Google Code for crowdsourcing package
fixed jquery plugin problem and missing css file in example_app
preserve linebreaks in textareas
Merge remote-tracking branch 'kat/django-1.4' into kat
Merge remote-tracking branch 'kat/linebreaks2' into kat