Merge branch 'webserver' into 'master'

react ui/.gitkeep

react ui/choropleth-map/.gitignore

react ui/choropleth-map/README.md

react ui/choropleth-map/package.json

react ui/choropleth-map/public/favicon.ico

react ui/choropleth-map/public/index.html

react ui/choropleth-map/public/manifest.json

react ui/choropleth-map/src/App.css

react ui/choropleth-map/src/App.js

react ui/choropleth-map/src/App.test.js

react ui/choropleth-map/src/components/Australia.topo.json

react ui/choropleth-map/src/components/ChoroplethMap.js

react ui/choropleth-map/src/components/Info.js

react ui/choropleth-map/src/index.css

react ui/choropleth-map/src/index.js

react ui/choropleth-map/src/serviceWorker.js

react ui/package.json

react ui/server.js