Fixed: make sure the leaflet fullscreen plugin is loaded after leaflet
Changed the global map to load the data in XHR instead of using requirejs
Fixed #9: Removed requirejs and simplified the JS code
Fixed #9: concatenate the CSS and JS files
Fixed #9: minified CSS
Fixed #9: minified the JS code
Fixed #9: minified the HTML output of metalsmith
Fixed #9: removed the link to the external style
Fixed #9: make sure to pass the asset revision to the build script
Merge pull request #83 from dpobel/9_frontend_optimizations

#9: Frontend optimizations