Update the Vagrant configuration to use:
* gunicorn
* nginx
* mysql
* memcached
* celery flower
* upstart

Set file encoding for Python interpreter to fix a test failure in the Vagrant VM.
Configure Vagrant log files to go to logs/vagrant.
Serve workbench URLs from /
Use UTF-8 encoding the MySQL database
Add more gunicorn workers
Merge pull request #384 from edx/will/vagrant-like-prod

Will/vagrant like prod