automated deployment support: packaging/server configuration management

[robdennis]

currently cuesbey is deployed on an AWS ubuntu 'micro-image' and the whole setup was manual:

• installs of postgres/python via apt-get
• manual builds of tutor after cloning from github
• install of redis after adding some random ppa
• clone of cuesbey and 'python setup.py develop' to system python
• manual configuration of apache pointing to hand-written apache.wsgi
• editing postgres's pg_hba.conf to allow me to run the unit tests
• hand creation of postgres db users and databases

and manual startups of:

• redis (unable to successful start in daemon mode with the packaged version I got from the ppa)
• celery (via django's manage.py)

if I want to move to a new instance, I don't want to redo these all again manually