register_signals and update_badges are each optional in badges.py
Image can be missing in admin
Make template base path configurable in views
The taggit app is optional, so should the tag field be
Clean up unused import
Add urlparams filter
Middleware to make request.recent_awards available for notifications of awards received since last visit
Django 1.2 tweaks, bugfixes

* Try to better support Django 1.2, and missing user_logged_in signal
* Look for PngImagePlugin outside of PIL
* Silently fail if deferred_award email templates missing
Unneeded tower calls
Notifications app is optional; temporarily disable claim codes test that fails in sqlite3
Experiments in getting `setup.py test` working