New directory/hiera structure

As proposed in GH-21
clean up whitespace/unused variable
remove devstack.yml compatibility support
fix box name
Vagrantfile: Remove reference to devstack.yaml
libaugeas-ruby is not needed anymore
Ensure defaults are fetched from vagrant-cfg.dist
Add basic Gemfile
Clean up .gitignore
Upgrade mayflower/php to 2.0.0 and install puppetlabs/inifile
Adjust hiera data defaults to new inifile php config
Adjust hiera keys due to mayflower/php fpm refactoring
Quote On for php settings in yaml
Extension configs are now called settings