Modified project setup, building html files will now open that file in your browser
Changed charsets to utf-8, since that's the enconding it's saved with
Various backend changes:

- Moved part of the "get" functionality to the backend namespace
- Added caching to the backend
- Automatic caching of all http requests
- Added requests to fetch top artist/tracks for a country
- Added requests to fetch a list of top artist/tracks for all the countries (cached)
- Added a html file to test backend stuff
- Added a json file with all country names + alpha-3 codes