Create a deployment scheme that works for our test server

Create a deployment scheme that works for our test server

* Apache2 with mod_wsgi
* MySQL (or Postgres? We already got MySQL set up...)
* virtualenv

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* Deployment lives in /opt/lancms2/ (deployment/)
* Symlinks local settings from /opt/lancms2/LOCAL_SETTINGS.py if it exists
* Symlinks sqlite file from /opt/lancms2/LANCMS2.sql if it exists
* Uses some sudoers magic to set permissions on file system, copy configuration to apache2 sites-available, a2ensite and restart apache2
* There is some magic that you have to read the fabfile to understand/reuse
* There is also some magic that I did in the included apache2-wsgi-virtualhost.conf. It points to an environmental variable that I set in /etc/apache2/envvars.