added demo environment
add fancy login screen
update playbooks
added documentation for brain
added documentation for frontend
added documentation for probe
change default ansible_managed banner
Merge remote-tracking branch 'github/master' into feat/demo-v1.1.0

Conflicts:
	roles/quarkslab.irma_deployment_probe/tasks/main.yml
fix host name
disable group_vars from .gitignore
added missing group_vars/frontend-demo
add explicit group_vars to gitignore
Merge remote-tracking branch 'origin/master' into feat/demo-v1.1.0
disable vbguest on demo env
add missing documentation
uniformized ansible scripts for doc generation
fixed nginx configuration for documentation
add help on rsync
Merge pull request #16 from quarkslab/fix-doc-vagrant-sync

add help on rsync
Update root directory for frontend env using install_dir variable
instead of plain path.