More work on updating the template for Django 1.5.

Replace jingo-minify with django-compressor. (Should I remove Jinja2 completely?)
Remove all references to memcache-toolbar. It hasn't been updated in over 2 years.
Replace django-session-csrf with regular django csrf. I haven't found a compelling
need for the extra work.
Remove other unneeded things.
Convert AUTH_PROFILE_MODULE to AUTH_USER_MODEL.