Add dir "node_modules" to exclude dirs in _config.yml (fixes #23)
Update Gemfile.lock with x64 packages for Windows
Move bower components into _bower_components to prevent that Jekyll copies them into _site
Import normalize.scss and cleanup .scss files
Remove subdomain definitions and cleanup _config.yml
Copy selected JS files with grunt to _site/js
Cleanup head.html
Design nav for small, medium and large screens
Remove subdomain variable from Gruntfile.js (fixes #25)
Deploy only "test" branch to test server (fixes #24)