Added session tracking using modified version of django-tracking2
Added admin to TRACK_IGNORE_URLS
Updated existing/ugly 'most_popular' command to use new session tracking
fix dependencies.txt
Merge branch 'devel' into visitor-tracking

Conflicts:
	dependencies.txt
	settings.py
	urls.py
some updates to the tracking module

The primary change is that it now tracks the response code for every
page view.
remove a gazillion print statements