Integrate Django 1.5 into KA Lite

There were three steps to this (the 3 commits at the end; not sure what the others are there for!)

* Copy over Django 1.5, re-apply KA-LITE-MOD
* Change django.conf.urls.default to django.conf.urls
* Change `{% url url_name` to `{% url 'url_name'`

Note: this took all of 15 mins... plus all the time to merge `release-0.12.0` to develop (another 15)