Removed upstart scripts
Removed Python install scripts
Combined xvfb and browser playbooks
Changed Jenkins user base to /home/jenkins
Added wheel dir creation
Moved jenkins_env script
Changed data directory to /var
Install newer version of rake in rbenv role
Added edxlocal role
Remove system packages already installed by common and edxlocal
Added list of Python packages to pre-install

Jarv/jenkins var updates for deploy

This causes a problem when you run `--skip-tags deploy`

fix mode for verified user

Setting this to !!null will not work, submitted a bug against ansible so
hopefully this can be resolved.

https://github.com/ansible/ansible/issues/4812

Until then I will fix edx-platform as a work-around to not
use an empty string as an import

fixing default for THEME_NAME