Vagrant 905834

This adds an option to deploy kitsune via Vagrant with Ubuntu 14.04. 

* ./manage.py generatedata does not currently work, not sure why. Was planning on using an anonymized dump of the production database for data.
* Also, this is blocked until the requirements update in #1984 is merged as well.
The submodule stuff *should* be done before vagrant up is run, but it's an easy instruction to miss. I added this in case that the repo wasn't cloned with the --recursive option.