Basic setup of Libraries Gateway

Setup of Libraries Gateway including:
- Back-end
    - Server setup using Express.js
    - API setup for Librarysearch(+) using external API's
    - API setup for libraries using MySQL database
    - Template logic and rendering
    - Swagger implementation
- Front-end
    - Template implementation for section pages
    - Google Maps implementation for `find a library`
    - Setup of automation tools (Bower, Grunt...)