Workstation: Install git-flow, pip and virtualenv
Desktop: Remove accessibility packages
Top-level site.yml now just includes other playbooks (inc. common.yml)
Added 'play-local' wrapper script
Cleanup
desktops: install additional packages/configuration files

- Install YubiKey configuration file for X11
- Install Gimp and Inkscape
- Do not install Download Statusbar on Firefox (has problems
  with recent releases of Firefox)
Workstation: Enable Rodney's Ansible PPA, install Eclipse CDT/JDT
Added a workstation to inventory