feat(map): Simple OSM map to draw geojson polygons
feat(map): improve map usability

* Keep drawn polygon on map once it's ready
* Clear map when drawing another polygon
feat(map): two way editing from map to geojson and geojson to map
Merge pull request #3 from HSLdevcom/LIIP30-list-all-facilities

Liip30 list all facilities
chore(merge): Merge branch 'master' into hubs-api