0000000 django 1 7 friendly

A while back I made some minor changes to this repo to make it work with Django 1.7/python 3 when I was trying it out.

But now I'm submitting this pull request because I don't like seeing the deprecation warning for simplejson when I start my dev server, its kind of annoying.

When I made these changes, I never had any conflicts in SOS, but this pull req can wait after till after the demo since it's possible that I may not have gone through all the uses cases of this app in SOS.