update areaDetail with data from d3 CDN (#547)

* update areaDetail with data from d3 CDN

- updated constants with d3 CDN info
- placed AreaDetail component in folder
- fixed J40Alert padding-left console warning
- added tests for both J40Alert rendering

* udpates FE to percentile data

* testing CORS on PR'd URL

* testing PR'd URL

client/src/components/MapWrapper/index.tsx

@@ -28,7 +28,7 @@ const MapWrapper = ({location}: IMapWrapperProps) => {
   });
   return (
     <>
-      <J40Alert alertStyle={{'padding-left': '1rem'}}/>
+      <J40Alert isPaddedLeft={true}/>
       <J40Map location={location}/>
       <div className={styles.mapCaptionTextLink}>
         <a href={constants.DOWNLOAD_ZIP_URL}>