That Django version upgrade was a tad more painful that I expected. The ListViews caused many silly problems regarding the moment they expect self.object_list to be available... and new versions of libraries had some new APIs to update.
Sadly, that was a 1.5 to 1.6 upgrade, still a bunch more to go! Looking forward 1.11 and start working on a python3 port...
Code rot is such a chore :(