Update for unicode compliance
Review Request #147 — Created Sept. 2, 2007 and submitted
Update various models and views for changes in the django unicode branch, according to the instructions at http://code.djangoproject.com/wiki/UnicodeBranch#PortingApplicationsTheQuickChecklist . There should be no real functional changes, other than avoiding errors when various things include unicode.
Ran unit tests, and made sure I could still upload and view a diff.